Page  127 ï~~2003 THE MICHIGAN BOTANIST 127 ANNOTATED CHECKLIST OF VASCULAR PLANTS IN THE VICINITY OF CEDAR CREEK AND BREWSTER LAKE, PIERCE CEDAR CREEK INSTITUTE, BARRY COUNTY, MICHIGAN Bradford S. Slaughter' and J. Dan Skean, Jr. Department of Biology, Albion College Albion, MI 49224-1831 dskean@albion.edu; 517. 629. 0525 INTRODUCTION The purpose of this study was to document the vascular flora and major plant community types present in the core area of the Pierce Cedar Creek Institute (portions of Sec 19 & 30, T2N, R8W) in Barry County, Michigan, north and south of Cloverdale Road, roughly 12 km south of Hastings and ca. 4 km west of highway M-37 at Dowling. This paper is a companion to Slaughter and Skean (2003), which presents a more detailed description of Institute property and its interesting relict conifer swamps. METHODS We made extensive herbarium collections in the vicinity of Cedar Creek and Brewster Lake from April-October 1999, and again from May-October 2001 in a contiguous area comprising ca. 125 ha of the 258 ha Institute property. Once identified, the first set of the 1999 collections was deposited at the herbarium of the Institute, hereafter abbreviated (unofficially) as PCCI. The second set, along with xerographic copies of unicates, was deposited at the herbarium of Albion College, which is known by the standardized acronym ALBC (Holmgren et al. 1990). The collections made in 2001, and a few additional collections made in 2002 and 2003, were deposited at ALBC. Based on these collections, field observations, and aerial photographs, the major plant community types of the collecting area were mapped and described qualitatively following the classification used by the Michigan Natural Features Inventory (Chapman 1986). RESULTS A total of 566 collections were made, yielding 394 species of vascular plants. Table 1 summarizes the species by major taxonomic group. Of these species, 72 (ca. 18%) are not native to the area. One hundred fifteen of the 376 native or naturalized species of seed plants collected in our study (ca. 30%) were not recorded from Barry County in Voss (1972, 1985, 1996). The three families with 1Present address: Department of Botany, Miami University, Oxford, OH 45056; slaughbs@muohio.edu

Page  128 ï~~128 THE MICHIGAN BOTANIST Vol. 42 TABLE 1. Summary of vascular plant collections in the vicinity of Cedar Creek and Brewster Lake, Pierce Cedar Creek Institute. Taxonomic Species Group Families Genera Native Non-Native Total Horsetails 1 1 4 0 4 Ferns 6 9 12 0 12 Grape-Ferns 1 1 2 0 2 Conifers 3 6 4 5 9 Angiosperms 80 222 300 67 367 Totals 91 239 322 72 394 the largest numbers of species are Asteraceae (38), Poaceae (35) and Cyperaceae (29). Figure 1 is an aerial photograph that delineates the area where herbarium collections were made and indicates major community types: relict conifer swamp, southern wet meadow, mesic southern forest, dry southern forest, dry-mesic southern forest, and prairie fen. Southern shrub-carr, which is commonly found as scattered patches in southern wet meadow, prairie fen, and relict conifer swamp, is not mapped. In some areas, relict conifer swamp intergrades with hardwood-conifer swamp. Likewise, these scattered areas are not indicated on the map. Areas indicated as "mixed wetlands" on the map harbor small areas of different wetland types. DISCUSSION Figure 1 should be compared to the topographic map and descriptions in Slaughter & Skean (2003) for additional site information. Although we collected throughout the mapped area shown in Figure 1, our main access point for collecting was a trail that extends roughly north and south of Cloverdale Road. The north trail passes though clearings, which include a barn and the Batts Cottage, and extends northeast along a sandy ridge of open areas and forest (dry southern forest) that drops to the wetlands east of Brewster Lake and rises to well-developed forest. The south trail extends through wetlands and rises along the ridge of an impressive esker harboring beech-maple forest (mesic southern forest). A large portion of the property is covered with relict conifer swamp that intergrades with hardwood-conifer swamp (Chapman 1986). These communities are predominantly found on the south half of the property, concentrated in the floodplain of Cedar Creek. They are described in detail in Slaughter and Skean (2003). In the checklist below the term "swamps" is used to describe these habitats. Another common community is southern wet meadow (Chapman 1986). This community type is characterized by sedge dominance. More specifically, Kost (2001) describes southern wet meadow as a Carex stricta-dominated, groundwater dependent community. Carex stricta was the most common sedge encoun

Page  129 ï~~2003 THE MICHIGAN BOTANIST 129 2003 THE MICHIGAN BOTANIST 129 FIGURE 1. Major plant community types in the vicinity of Cedar Creek and Brewster Lake, Pierce Cedar Creek Institute. tered in Institute examples of this community type. In the checklist below the term "sedge meadows" is used to describe these habitats. A relatively large wet meadow is located in the immediate vicinity of Cedar Creek, on both sides of Cloverdale Road. The flats south of the road are disturbed and have an abundance of Lythrum salicaria (purple loosetrife). The meadow north of the road is less disturbed. Southern wet meadow is also found south of Brewster Lake, extending to Cloverdale Road, and south of Cloverdale Road on both sides of the main trail. These meadows are quite showy in the autumn when several members of the Asteraceae flower, including Solidago canadensis (Canada goldenrod), S. gigantea (tall goldenrod), He

Page  130 ï~~130 THE MICHIGAN BOTANIST Vol. 42 lianthus giganteus (tall sunflower), Cirsium muticum (swamp thistle) and Aster spp. (asters). Of note in spring is the presence of Cypripedium parviflorum var. pubescens (large yellow lady-slipper), which is occasionally found in small colonies. Cypripedium parviflorum var. makasin (small yellow ladyslipper) is also present at the Institute, but is mostly restricted to shadier swamps and thickets. The transition areas between swamp and wet meadow are known as southern shrub-carr (Chapman 1986). Several species of the genus Cornus (dogwoods) are conspicuous in these areas. Because shrubcarr was commonly found as scattered patches in larger areas of other community types, it was not mapped for this study. Sedge meadows typically convert to shrub-carr in the absence of fire (Kost 2001), and the dense layer of dead, matted vegetation found in Institute southern wet meadows suggests there has been an absence of fire in recent times. South of Cloverdale Road, surrounded by swamps, is an esker supporting mesic southern forest (Chapman 1986). This forest was disturbed in the past, and harbors an unexpectedly depauperate spring flora. Aerial photos from 1950 show several openings in the canopy, perhaps the result of fire and/or grazing. Evidence of these openings was found in this survey. Several of the larger trees in the forest have low branching, suggestive of a more open canopy in the past. Also, the forest floor is grassier than would be expected in an undisturbed forest. Common trees include Fagus grandifolia (American beech) and Acer saccharum (sugar maple). Several of these are quite large. Common herbaceous species include Phlox divaricata (wood phlox), Viola rostrata (long-spurred violet), Viola pubescens (yellow violet), and Erythronium americanum (yellow troutlily). Of note is an abundance of Floerkea proserpinacoides (false mermaid) in the ground layer, especially along the trails. North of Cloverdale Road, east of Brewster Lake, is a sandy esker supporting disturbed open areas and, in some places, development of a dry southern forest community (Chapman 1986). Aerial photos from 1950 showed that the ridge was open at that time. Young forest growth on much of the esker was noted in this survey. Common trees include Quercus alba (white oak), Quercus velutina (black oak), and occasionally Quercus muehlenbergii (chinquapin oak). This forest growth is especially dense on the north end of the ridge, where most trees were roughly eight to ten meters in height. To the north and west of this dry southern forest is a large hill supporting mature dry-mesic southern forest (Chapman 1986). The forest is notable for several very large specimens of Quercus rubra (red oak), Fraxinus americana (white ash), and Carya cordiformis (bitternut hickory). There were also a few large specimens of Fagus grandifolia (American beech) at the top of the hill. This forest appears less disturbed than others on the property, and supports several common spring wildflowers, including Arisaema triphyllum (Jack-in-the-pulpit), Claytonia virginiana (spring beauty), and Viola canadensis (Canada violet). Summer species include Hackelia virginiana (stickseed), Polygonum virginianum (jumpseed), Laportea canadensis (wood nettle), and Campanula americana (American bellflower). A few individuals of the orchid Corallorhiza maculata (spotted coral-root) are also present. Notable was the scarcity of blooming Trillium grandiflorum (large white trillium) in Institute forests. There were few

Page  131 ï~~2003 THE MICHIGAN BOTANIST 131 mature specimens of trillium on the property, and this may be due to deer grazing pressure (Gary Pierce, pers. comm.). The shore of Brewster Lake harbors a prairie fen, which is especially well developed on the east and south shores. Several of the common plants found are those of the southern wet meadow, with the addition of Potentilla fruticosa (shrubby cinquefoil), Parnassia glauca (grass-of-parnassus), Spiranthes cernua (nodding ladies'-tresses), Scirpus acutus (hardstem bulrush), Solidago uliginosa (bog goldenrod), and Cypripedium reginae (showy lady-slipper). The seldomnoticed spring-flowering orchid Spiranthes lucida (shining ladies'-tresses) was observed in this fen in low numbers. No classic prairie grasses were encountered in this area. Much of the eastern shore of Brewster Lake is composed of sedge flats, an area of seepages dominated by sedges and Eleocharis spp. (spikerushes). Bordering these flats is a shrub-tree fringe of Larix laricina (tamarack), Toxicodendron vernix (poison sumac), and Vaccinium corymbosum (blueberry). Prairie fen grades into southern wet meadow south of the lake. The shore north of the lake is marshier, with an abundance of Typha latifolia (common cat-tail). Sistrurus catenatus catenatus (eastern massasauga rattlesnake), a state-listed "special concern" species (Michigan Natural Features Inventory 1999b) was encountered in these wetlands, and also occasionally elsewhere on Institute property. Much of the upland property was used for agriculture before 1952. Many of these areas were found to support young forest growth in 1999. There are several introduced species in old fields, along trails, and along the roadside. Most of the invasive species collected, such as Lonicera spp. (honeysuckles), were found in disturbed sites. Two exceptions are Lythrum salicaria (purple loosetrife), and Stellaria media (chickweed), which are spreading into southern wet meadow and mesic southern forest respectively. No state-listed threatened, endangered, or special concern plant species (Michigan Natural Features Inventory 1999a) were encountered in this study. The Southwest Michigan Land Conservancy (1998) reported three state-listed species known historically from this area: Cypripedium candidum (small white lady-slipper), which is listed as "threatened," and Agrimonia rostellata (beaked agrimony), and Amorpha canescens (leadplant), which are listed as "special concern" species. If extant at the site, likely habitat for C. candidum is the prairie fen along Brewster Lake. Correspondingly one should look for Agrimonia rostellata in forested or open sandy areas, and Amorpha canescens in open sandy areas, which are becoming increasingly rare due to succession and the introduction of autumn-olive (Elaeagnus umbellata). ANNOTATED CHECKLIST OF VASCULAR PLANTS The following checklist is arranged phylogenetically by major taxonomic group (Division) and then alphabetically by family, genus and species. Family circumscriptions for free-sporing tracheophytes (pteridophytes) and conifers follow Flora of North America Editorial Committee (1993). Angiosperm family

Page  132 ï~~132 THE MICHIGAN BOTANIST Vol. 42 circumscriptions follow those given in Gleason & Cronquist (1991) for comparison with similar studies that use this format. A typical checklist entry is as follows: scientific name, common namecollection number (herbarium or herbaria where specimen is deposited), presence in the relict conifer swamp cedar (C) or tamarack (T) study plots or both (CT) from Slaughter and Skean (2003), and a general statement that indicates where the species is found and general frequency of occurrence, if noted by us. Frequency of occurrence is highly subjective and roughly follows the system outlined by Voss (1972). Collection numbers are those of Slaughter unless indicated otherwise. An asterisk (*) indicates a native or naturalized species not recorded from Barry County in Voss (1972, 1985, 1996). Non-native species, including those native elsewhere in Michigan, are indicated in bold. Scientific names for seed plants generally follow Voss (1972, 1985, 1996). Where this is not the case, the scientific name used in Voss is indicated in brackets. EQUISETOPHYTA (Horsetails & Scouring Rushes) EQUISETACEAE Equisetum arvense L., Field horsetail-63, 105 (PCCI, ALBC), disturbed areas throughout. E. fluviatile L., Water horsetail-329 (ALBC), CT, common in open tamarack swamp, usually in standing water. E. palustre L., Marsh horsetail-89 (PCCI, ALBC), 333 (ALBC), in moist, sedgy thicket S of Cloverdale Rd. E. pratense Ehrh., Meadow horsetail-99 (PCCI, ALBC), T, common in swamps S of Cloverdale Rd. POLYPODIOPHYTA (Ferns) ASPLENIACEAE Asplenium platyneuron (L.) Oakes, Ebony spleenwort-Skean 4085 (PCCI, ALBC), lightly wooded ridge E of Brewster Lake. DENNSTAEDTIACEAE Pteridium aquilinum (L.) Kuhn var. latiusculum (Desvaux) L. Underwood, Bracken-Skean 4084 (PCCI, ALBC), dry, lightly wooded ridge E of Brewster Lake. DRYOPTERIDACEAE Athyrium filix-femina (L.) Mertens var. angustum (Willd.) G. Lawson, Lady fern-406, 474 (ALBC), C, occasional in moist thickets and swamps. Dryopteris cristata (L.) A. Gray, Crested wood fern-299 (PCCI, ALBC), 475 (ALBC), C, occasional in swamps. D. intermedia (Muhl.) A. Gray, Fancy wood-fern-343, 426 (ALBC), CT, common on mossy hummocks in swamps. OSMUNDACEAE Osmunda cinnamomea L., Cinnamon fern-81 (PCCI, ALBC), 340 (ALBC), CT, in sedge meadows, moist thickets, and swamps throughout. O. claytoniana L., Interrupted fern-160 (PCCI, ALBC), small sedgy opening along N side of Cloverdale Rd. O. regalis L., Royal fern-298 (PCCI, ALBC), CT, occasional in swamps. PTERIDACEAE Adiantum pedatum L., Maidenhair fern-278 (PCCI, ALBC), CT, common in conifer swamps.

Page  133 ï~~2003 THE MICHIGAN BOTANIST 133 THELYPTERIDACEAE Thelypteris palustris Schott, Marsh-fern-65, 265 (PCCI, ALBC), CT, common in wetlands throughout. Onoclea sensibilis L., Sensitive fern-57 (PCCI, ALBC), CT, wetlands throughout. Polystichum acrostichoides (Michaux) Schott, Christmas fern-293 (PCCI, ALBC), common in woods on sloping sides of esker S of Cloverdale Rd. OPHIOGLOSSOPHYTA (Grape-ferns and Adder's-tongues) OPHIOGLOSSACEAE Botrychium dissectum Sprengel, Grape-fern-318 (PCCI, ALBC), lightly wooded ridge E of Brewster Lake. B. virginianum (L.) Swartz, grape-fern, Rattlesnake-fern-331, 338, 342 (ALBC), CT, hummocks in conifer swamps S of Cloverdale Rd. PINOPHYTA (Conifers) CUPRESSACEAE Juniperus communis L., Common juniper-313 (PCCI, ALBC), uncommon in disturbed areas, planted on N side of Batts Cottage. J. virginiana L., Red-cedar-Skean 4040 (PCCI, ALBC), small trees on ridge N of Batts Cottage. *Thuja occidentalis L., Northern white-cedar-Skean 4080 (PCCI, ALBC), CT, very common (sometimes dominant) in swamps around periphery of esker S of Cloverdale Rd. Also occasional near Brewster Lake. PINACEAE Larix laricina (DuRoi) K. Koch, Tamarack-104 (PCCI, ALBC), CT, dominant in swamps throughout. Also in wetlands around Brewster Lake. Picea pungens Engelm., Blue Spruce-Skean 4240 (ALBC), planted SW of Batts Cottage. Pinus resinosa Aiton, Red pine-Skean 4046 (PCCI, ALBC), planted on ridge N of Batts Cottage. P strobus L., White pine-Skean 4235 (ALBC), planted in clearing just S of Batts Cottage. P sylvestris L., Scots pine-Skean 4045 (PCCI, ALBC), planted on ridge N of Batts Cottage. TAXACEAE Taxus baccata L., English yew-311 (PCCI, ALBC), planted in lawn of Batts Cottage. MAGNOLIOPHYTA (Angiosperms) ACERACEAE *Acer negundo L., Box-elder-8 (PCCI, ALBC), common in disturbed upland thickets. *A. nigrum Michaux f., [A. saccharum Marshall, as given in Voss (1985)], Black maple-463 (ALBC), T, one tree found at edge of tamarack swamp S of Cloverdale Rd., in moist thicket. A. platanoides L., Norway maple-Skean 4069 (PCCI, ALBC), planted in lawn of Batts Cottage. A. rubrum L., Red maple-34, 296 (PCCI, ALBC), CT, common in swamps and at edges of esker S of Cloverdale Rd. A. saccharinum L., Silver maple-310 (PCCI, ALBC), uncommon in swamps, planted in lawn of Batts Cottage. *A. saccharum Marsh., Sugar maple-301 (PCCI, ALBC), C, common in forest on esker S of Cloverdale Rd., and in woods elsewhere. ALISMATACEAE Sagittaria latifolia Willd., Wapato-186, 266 (PCCI, ALBC), Skean 4075 (PCCI, ALBC), marshy areas around Brewster Lake.

Page  134 ï~~134 THE MICHIGAN BOTANIST Vol. 42 ANACARDIACEAE Rhus hirta (L.) Sudworth [R. typhina L., as given in Voss (1985)], Staghorn sumac-279 (PCCI, ALBC), in disturbed upland thickets. Toxicodendron radicans (L.) Kuntze, Poison-ivy-Skean 4041 (PCCI, ALBC), CT, common vine in uplands and swamps. T vernix (L.) Kuntze, Poison sumac-198 (PCCI, ALBC), CT, common in open tamarack swamps and around Brewster Lake. APIACEAE (UMBELLIFERAE) Angelica atropurpurea L., Purplestem angelica-141 (PCCI, ALBC), locally common in sedge meadows. Cicuta bulbifera L., Water-hemlock-195 (PCCI, ALBC), uncommon in streamlet S of Brewster Lake. C. maculata L., Water-hemlock-170 (PCCI, ALBC), 407 (ALBC), common in sedge meadows and moist thickets. Cryptotaenia canadensis (L.) DC., Honewort-410 (PCCI, ALBC), CT, common in swamps. Daucus carota L., Queen-Anne's-lace-183 (PCCI, ALBC), weed along Cloverdale Rd. and in disturbed dry ground. Osmorhiza claytonii (Michaux) C. B. Clarke, Sweet cicely-90b (PCCI, ALBC), open thicket along Cedar Creek, S of Cloverdale Rd. O. longistylis (Torrey) DC., Sweet cicely-90a (PCCI, ALBC), open thicket along Cedar Creek, S of Cloverdale Rd. *Oxypolis rigidior (L.) Raf., Cowbane-482 (ALBC), T, uncommon at edges of swamps and in sedge meadows. *Sanicula gregaria Bickn., Black snakeroot-163 (PCCI, ALBC), 381, 424 (ALBC), Skean 4086 (PCCI, ALBC), C, moist thickets. *Zizia aurea (L.) Koch, Golden Alexanders-58 (PCCI, ALBC), sedge meadows and fens. APOCYNACEAE Apocynum cannabinum L., Indian-hemp-204a (PCCI, ALBC), common in sedge meadows, often under dogwoods. ARACEAE *Acorus calamus L., Sweet-flag-88 (PCCI, ALBC), occasional in moist sedgy thicket near tamarack swamp, S of Cloverdale Rd. Arisaema triphyllum (L.) Schott, Jack-in-the-pulpit-28, 33 (PCCI, ALBC), CT, common in woods, abundant in conifer swamps. Symplocarpus foetidus (L.) Nutt., Skunk-cabbage-86 (PCCI, ALBC), CT, abundant in conifer swamps. Also common in sedge meadows and moist thickets. ARALIACEAE Aralia nudicaulis L., Wild sarsaparilla-478 (ALBC), C, occasional at edge of cedar swamp. Panax trifolius L., Dwarf ginseng-26 (PCCI, ALBC), common in woods throughout. ARISTOLOCHIACEAE *Asarum canadense L., Wild-ginger-24 (PCCI, ALBC), T, locally common in swamp borders and woods. ASCLEPIADACEAE Asclepias incarnata L., Swamp milkweed-199 (PCCI, ALBC), Skean 4082 (PCCI, ALBC), common in marshes and sedge meadows throughout. A. syriaca L., Common milkweed-144 (PCCI, ALBC), occasional along trail S of Cloverdale Rd. ASTERACEAE (COMPOSITAE) Achillea millefolium L., Yarrow-132 (PCCI, ALBC), disturbed area at trailhead S of Cloverdale Rd. Ambrosia artemisiifolia L., Common ragweed-Skean 4050 (PCCI, ALBC), common in disturbed soil on ridge N of Batts Cottage. *Aster cordifolius L., Heart-leaved aster-289 (PCCI, ALBC), occasional in swamp dominated by Carpinus, at edge of tamarack swamp.

Page  135 ï~~2003 THE MICHIGAN BOTANIST 135 A. lanceolatus Willd., Panicled aster-253 (PCCI, ALBC), occasional in moist thickets. A. lateriflorus (L.) Britton, Calico aster-235 (PCCI, ALBC), 476, 477 (ALBC), CT, along trails in disturbed soil. Common in swamps. A. novae-angliae L., New England aster-277 (PCCI, ALBC), occasional in old fields/disturbed uplands S of Cloverdale Rd. A. pilosus Willd., Frost aster-276 (PCCI, ALBC), near trailhead S of Cloverdale Rd. A. puniceus L., Purple-stemmed aster-270 (PCCI, ALBC), common in lakeside fen and surrounding thickets. Occasional elsewhere in moist thickets. A. umbellatus Miller, Flat-topped aster-231 (PCCI, ALBC), common in large sedge meadow N of Cloverdale Rd. Bidens cernuus L., Nodding beggar-ticks--471 (ALBC), locally common in moist disturbed soil N of Cloverdale Rd. B. coronatus (L.) Britton, Tickseed-sunflower-262, 271 (PCCI, ALBC), 387, 421 (ALBC), CT, common in sedge meadows, open conifer swamps, and lakeside fen. Centaurea maculosa Lam., Spotted knapweed-214 (PCCI, ALBC), Skean 4035 (PCCI, ALBC), common in disturbed sandy soil on ridge N of Batts Cottage. *Cichorium intybus L., Chicory-178 (PCCI, ALBC), local along Cloverdale Rd. Cirsium arvense (L.) Scop., Canada thistle-158 (PCCI, ALBC), common in barnyard N of Cloverdale Rd. C. muticum Michaux, Swamp thistle-255 (PCCI, ALBC), T, common in moist thickets and edges of open sedge meadows. C. vulgare (Savi) Tenore, Bull thistle-233 (PCCI, ALBC), occasional in barnyard N of Cloverdale Rd. Conyza canadensis (L.) Cronquist, Horseweed-470 (ALBC), occasional in disturbed open areas N of Cloverdale Rd. Erigeron annuus (L.) Pers., Daisy fleabane-472 (ALBC), disturbed moist thicket N of Cloverdale Rd. *E. philadelphicus L., Common fleabane-103 (PCCI, ALBC), disturbed areas along trail on esker S of Cloverdale Rd. E. strigosus Willd., Daisy fleabane-Skean 4048 (PCCI, ALBC), common in disturbed sandy soil on ridge N of Batts Cottage. Eupatorium maculatum L., Joe-pye-weed-228 (PCCI, ALBC), 446 (ALBC), T, abundant in sedge meadows and thickets. E. perfoliatum L., Boneset-232 (PCCI, ALBC), T, common in sedge meadows throughout. *Euthamia graminifolia (L.) Nutt., Flat-topped goldenrod-234, 243 (PCCI, ALBC), common in disturbed open areas. Gnaphalium obtusifolium L., Fragrant cudweed-304 (PCCI, ALBC), common in sandy disturbed soil on ridge N of Batts Cottage. Helianthus giganteus L., Tall sunflower-230 (PCCI, ALBC), common in open sedge meadows. *H. tuberosus L., Jerusalem-artichoke-273 (PCCI, ALBC), occasional in moist roadside thicket. *Lactuca biennis (Moench) Fern., Tall blue lettuce-267 (PCCI, ALBC), occasional in moist disturbed soil N of Brewster Lake. *Prenanthes racemosa Michaux, Rattlesnake-root-257 (PCCI, ALBC), local in moist open roadside thicket. Rudbeckia hirta L., Black-eyed Susan-149 (PCCI, ALBC), common in open thickets, sedge meadows, and fens. Senecio aureus L., Golden ragwort-14 (PCCI, ALBC), CT, common in sedge meadows, mucky thickets, and swamps throughout. *Solidago altissima L., Tall goldenrod-229 (PCCI, ALBC), very common in open areas. S. canadensis L., Canada goldenrod-258 (PCCI, ALBC), disturbed uplands. *S. gigantea Aiton, Late goldenrod-261 (PCCI, ALBC), common at periphery of sedge meadows. S. patula Willd., Rough-leaved goldenrod-254 (PCCI, ALBC), common in moist thickets. S. rugosa Miller, Rough-leaved goldenrod-247 (PCCI, ALBC), CT, common in wet areas throughout.

Page  136 ï~~136 THE MICHIGAN BOTANIST Vol. 42 *S. uliginosa Nutt., Bog goldenrod-272 (PCCI, ALBC), common in lakeside fen. Taraxacum officinale Wiggers, Common dandelion-5, 41 (PCCI, ALBC), C, especially common in disturbed, grassy areas. Also occasional in swamps. Tragopogon dubius Scop., Goat's-beard-Skean 4043 (PCCI, ALBC), occasional in disturbed ground on ridge N of Batts Cottage. BALSAMINACEAE *Impatiens capensis Meerb., Spotted touch-me-not-218 (PCCI, ALBC), CT, very common in moist areas throughout. *I. pallida Nutt., Pale touch-me-not-217, 260 (PCCI, ALBC), local, one small colony in sedgy thicket along N side of Cloverdale Rd. BERBERIDACEAE *Berberis thunbergii DC., Japanese barberry-312 (PCCI, ALBC), planted in cottage lawn. Also rarely escaped to moist thickets and swamps. Podophyllum peltatum L., Mayapple-95 (PCCI, ALBC), common in upland woods. BETULACEAE Betula alleghaniensis Britton, Yellow birch-130 (PCCI, ALBC), CT, common in conifer swamps. A few trees along SW shore of Brewster Lake. B. pendula Roth, European white birch-433 (ALBC), Skean 4044 (PCCI, ALBC), planted on ridge N of Batts Cottage and near constructed pond S of Cloverdale Rd. Carpinus caroliniana Walter, Hornbeam-94 (PCCI, ALBC), T, swamps S of Cloverdale Rd., usually in drier edges. Sometimes forming thickets. *Ostrya virginiana (Miller) K. Koch, Hop-hornbeam-294 (PCCI, ALBC), Occasional in upland woods. BORAGINACEAE Hackelia virginiana (L.) I. M. Johnston, Stickseed-Skean 4089 (PCCI, ALBC), mature woods on hill N of Brewster Lake. BRASSICACEAE (CRUCIFERAE) Arabidopsis thaliana (L.) Heynh., Mouse-ear cress-46 (PCCI, ALBC), occasional along trail on esker S of Cloverdale Rd., in disturbed grassy areas. Barbarea vulgaris R. Br., Yellow rocket-335 (ALBC), common in disturbed open areas. Cardamine diphylla (Michaux) A. Wood [Dentaria diphylla Michaux, as given in Voss (1985)], Two-leaved toothwort-337 (ALBC), local at base of esker S of Cloverdale Rd. in mucky swamp border. C. douglassii Britton, Pink spring cress-22 (PCCI, ALBC), Skean 4022 (PCCI, ALBC), CT, abundant in wetlands and woods throughout. *C. pensylvanica Willd.-330 (ALBC), CT, occasional in conifer swamp openings, in standing water. C. rhomboidea (Pers.) DC. [C. bulbosa (Muhl.) BSP., as given in Voss (1985)], Spring cress-Skean 4231 (ALBC), CT, common in swamps and sedge meadows. Lepidium campestre (L.) R. Br., Pepper-grass-Skean 4047 (PCCI, ALBC), common in disturbed sandy soil on ridge N of Batts Cottage. CAMPANULACEAE *Campanula americana L., American bellflower-206 (PCCI, ALBC), Skean 4057 (PCCI, ALBC), common in woods and thickets, including disturbed ground. C. aparinoides Pursh, Marsh bellflower-184, 201 (PCCI, ALBC), common in sedge meadows. Lobelia siphilitica L., Great blue lobelia-248 (PCCI, ALBC), occasional in sedge meadows and moist thickets. CAPRIFOLIACEAE Lonicera dioica L., Glaucous honeysuckle-50 (PCCI, ALBC), in large sedge meadow N of Cloverdale Rd., W of Cedar Creek. *L. morrowii A. Gray, Morrow honeysuckle-11 (PCCI, ALBC), shrub near trail N of Cloverdale Rd., disturbed thicket.

Page  137 ï~~2003 THE MICHIGAN BOTANIST 137 L. tatarica L., Tartarian honeysuckle-55 (PCCI, ALBC), uncommon along Cloverdale Rd., near N trail. Triosteum auranticum E. P. Bicknell, Tinker's-weed-317 (PCCI, ALBC), uncommon in disturbed dry and moist thickets along trail N of Cloverdale Rd. Viburnum lentago L., Nannyberry-59 (PCCI, ALBC), 480 (ALBC), Skean 4081 (PCCI, ALBC), Skean 4239 (ALBC), CT, common in moist thickets and swamps. V rafinesquianum Schultes, Downy arrow-wood-Skean 4239 (ALBC), occasional in thickets along trail N of Cloverdale Rd. CARYOPHYLLACEAE *Arenaria serpyllifolia L., Sandwort-Skean 4237 (ALBC), occasional in disturbed area at trailhead S of Cloverdale Rd. Cerastium fontanum Baumg., Mouse-ear chickweed-17 (PCCI, ALBC), 363 (ALBC), disturbed open areas, often trailside. Dianthus armeria L., Deptford pink-140 (PCCI, ALBC), Skean 4034 (PCCI, ALBC), common on disturbed sandy ridge N of Batts Cottage along trail. Stellaria longifolia Willd., Long-leaved stitchwort-76 (PCCI, ALBC), 362 (ALBC), CT, common in sedge meadows and moist thickets. *S. media (L.) Viii., Chickweed-Skean 4241 (ALBC), uncommon in woods on esker S of Cloverdale Rd. CELASTRACEAE *Euonymus europaea L., Spindle tree-309 (PCCI, ALBC), in barnyard N of Cloverdale Rd. E. obovata Nutt., Running strawberry-bush-Skean 4238 (ALBC), occasional in swamps. CLUSIACEAE Hypericum perforatum L., Common St. John's-wort--459 (ALBC), occasional weed along trail S of Cloverdale Rd, in moist soil. H. punctatum Lam., Spotted St. John's-wort--460 (ALBC), occasional at edge of swampy ironwood thicket, S of Cloverdale Rd., near trail. CORNACEAE Cornus alternifolia L. f., Alternate-leaved dogwood-80 (PCCI, ALBC), C, in seepy sedge meadow W of trails, S of Cloverdale Rd. C. amomum Miller, Pale dogwood-Skean 4076 (PCCI, ALBC), uncommon shrub in moist thickets near Brewster Lake. C. foemina Miller, Gray dogwood-287 (PCCI, ALBC), T, moist thickets at edge of tamarack swamp. C. florida L., Flowering dogwood-92 (PCCI, ALBC), small tree in trailside woods S of Cloverdale Rd. C. sericea L. [C. stolonifera Michaux, as given in Voss (1985)], Red-osier dogwood-78 (PCCI, ALBC), T, occasional in moist thickets and sedge meadows. CUSCUTACEAE *Cuscuta gronovii Schultes, Swamp dodder-469 (ALBC), swampy thicket S of Cloverdale Rd. Twining around Impatiens capensis. CYPERACEAE *Carex alata Torrey, Sedge-153 (PCCI, ALBC), common near boat landing on Brewster Lake, E shore, near Batts Cottage. C. bebbii (Bailey) Fern., Sedge-435 (ALBC), occasional along trail near tamarack swamp, S of Cloverdale Rd. *C. blanda Dewey, Sedge-12 (PCCI, ALBC), along trail in moist soil, 30 m from barn N of Cloverdale Rd. *C. bromoides Willd., Sedge-328 (ALBC), common at edge of tamarack swamp. C. comosa Boott, Sedge-115, 189 (PCCI, ALBC), T, in lakeside fen. *C. diandra Schrank, Sedge-118 (PCCI, ALBC), on sedge hummock in lakeside fen. Common. *C. disperma Dewey, Sedge-360 (ALBC), C, uncommon at edge of tamarack swamp.

Page  138 ï~~138 THE MICHIGAN BOTANIST Vol. 42 *C. gracillima Schw., Sedge-69 (PCCI, ALBC), 326 (ALBC), in moist thickets and swamp borders. C. hystericina Willd., Sedge-125, 169 (PCCI, ALBC), in moist areas throughout. *C. interior Bailey, Sedge-116, 172, 174 (PCCI, ALBC), in lakeside fen, sedge meadows, and moist thickets. *C. lacustris Willd., Sedge-190 (PCCI, ALBC), 368 (ALBC), T, S of Brewster Lake in marshy areas. Common in open tamarack swamp N of esker S of Cloverdale Rd. *C. laevivaginata (Kuek.) Mack., Sedge-124 (PCCI, ALBC), in tamarack/poison sumac thicket near Brewster Lake. *C. lasiocarpa Ehrh. [C. lanuginosa Michaux, as given in Voss (1972)], Sedge-67 (PCCI, ALBC), occasional in sedgy thicket N of Cloverdale Rd. *C. leptonervia Fern., Sedge-13 (PCCI, ALBC), along trail N of Cloverdale Rd. near barn, in moist soil. C. lurida Wahl., Sedge-168 (PCCI, ALBC), moist ground near Cloverdale Rd. C. pensylvanica Lam., Pennsylvania sedge-Skean 4027 (PCCI, ALBC), common along trail in esker woods S of Cloverdale Rd. C. prairea Dewey, Sedge-327 (ALBC), edge of tamarack swamp. *C. pseudo-cyperus L., Sedge-334, 366 (ALBC), occasional in tamarack swamp S of Cloverdale Rd. *C. sparganoides Willd., Sedge-432 (ALBC), common on esker S of Cloverdale Rd. *C. stricta Lam., Sedge-224 (PCCI, ALBC), T, dominant in sedge meadows. Cyperus filiculmis Vahl, Nut-grass-Skean 4051 (PCCI, ALBC), growing on trail N of Cloverdale Rd., on disturbed sandy ridge. C. rivularis Kunth, Nut-grass-236 (PCCI, ALBC), occasional in wet ditches along Cloverdale Rd. C. strigosus L., Nut-grass-237 (PCCI, ALBC), very common in wet ditches along Cloverdale Rd. Eleocharis erythropoda Steudel, Spike-rush-119 (PCCI, ALBC), sedge tussock in lakeside fen. *E. palustris L. [E. smallii Britton, as given in Voss (1972)], Spike-rush-123 (PCCI, ALBC), along a seepage near E shore of Brewster Lake. Scirpus acutus Bigelow, Hardstem bulrush-135 (PCCI, ALBC), common in lakeside fen E of Brewster Lake. S. atrovirens Willd., Bulrush-137 (PCCI, ALBC), common in springy fen area S of Cloverdale Rd. S. cyperinus (L.) Kunth, Wool-grass--454 (ALBC), occasional in moist thickets. *S. pendulus Muhl., Bulrush-213 (PCCI, ALBC), disturbed open area N of Brewster Lake, near trail. Uncommon. DIOSCOREACEAE Dioscorea villosa L., Wild yam-405 (ALBC), common in swampy thicket S of Cloverdale Rd. ELAEAGNACEAE *Elaeagnus angustifolia L., Russian-olive-281 (PCCI, ALBC), weedy thicket S of Cloverdale Rd. *E. umbellata Thunb., Autumn-olive-60 (PCCI, ALBC), common in disturbed thicket N of Cloverdale Rd. ERICACEAE *Gaultheria hispidula (L.) Bigelow, Creeping-snowberry--413 (ALBC), C, rare on mossy hummocks in cedar swamp. Vaccinium corymbosum L., Highbush blueberry-126 (PCCI, ALBC), CT, conifer swamps and in swampy tamarack thickets near Brewster Lake. EUPHORBIACEAE Acalypha rhomboidea Raf., Three-seeded mercury-244 (PCCI, ALBC), uncommon in moist open thicket along Cloverdale Rd.

Page  139 ï~~2003 THE MICHIGAN BOTANIST 139 Euphorbia maculata L., Spurge-177 (PCCI, ALBC), mat-like plant in gravelly parking area at trail entrance S of Cloverdale Rd. FABACEAE (LEGUMINOSAE) *Amphicarpaea bracteata (L.) Fern., Hog-peanut-165 (PCCI, ALBC), Skean 4054 (PCCI, ALBC), CT, twining vine in sedge meadows and moist thickets. *Apios americana Medicus, Groundnut-Skean 4055, 4083 (PCCI, ALBC), CT, sedge meadows and moist thickets. *Coronilla varia L., Crown vetch-133 (PCCI, ALBC), local patch near entrance to trail S of Cloverdale Rd., spreading into sedge meadow. Desmodium glutinosum (Willd.) Wood, Tick-trefoil-227 (PCCI, ALBC), lightly wooded area on sandy ridge N of Batts Cottage. D. paniculatum (L.) DC., Tick-trefoil--458 (ALBC), Skean 4060 (PCCI, ALBC), along trails in moist soil. Medicago lupulina L., Black medick-246 (PCCI, ALBC), patchy, in disturbed moist soil. Melilotus alba Medicus, White sweet-clover-Skean 4049 (PCCI, ALBC), occasional on ridge N of Batts Cottage. Lathyrus palustris L., Marsh pea-188 (PCCI, ALBC), especially common in tangled vegetation along small streamlets in sedge meadows. Occasional in other wet areas. Trifolium pratense L., Red clover-251 (PCCI, ALBC), Skean 4031 (PCCI, ALBC), occasional in disturbed areas. T. repens L., White clover-157 (PCCI, ALBC), common in barnyard N of Cloverdale Rd., and along trails. Vicia americana Willd., American vetch-64 (PCCI, ALBC), occasional in moist, sedgy thicket N of Cloverdale Rd. FAGACEAE *Fagus grandifolia Ehrh., Beech-290 (PCCI, ALBC), CT, common on esker S of Cloverdale Rd., and occasional in mature woods N of Brewster Lake. Several large specimens. Quercus alba L., White oak-320 (PCCI, ALBC), common in young woods on ridge S of Pierce Lake. Q. bicolor Willd., Swamp white oak-307 (PCCI, ALBC), one tree on slope of ridge N of Batts Cottage, dry soil. *Q. macrocarpa Michaux, Bur-oak--450 (ALBC), T, occasional in open swamps and moist thickets. *Q. muehlenbergii Engelm., Chinquapin oak-319 (PCCI, ALBC), uncommon on lightly wooded ridge N of Batts Cottage. Q. rubra L., Red oak-305 (PCCI, ALBC), common in woods throughout. Q. velutina Lam., Black oak-303 (PCCI, ALBC), Skean 4039 (PCCI, ALBC), occasional on sandy ridge N of Batts Cottage. FUMARIACEAE Dicentra cucullaria (L.) Bernh., Dutchman's-breeches-Skean 4020 (PCCI, ALBC), uncommon in moist grassy thicket near beginning of trail S of Cloverdale Rd. GERANIACEAE Geranium maculatum L., Wild geranium-56 (PCCI, ALBC), T, common in upland woods and in wetlands. *G. robertianum L., Herb Robert-97 (PCCI, ALBC), uncommon in cedar swamp near SW end of esker S of Cloverdale Rd. GROSSULARIACEAE Ribes hirtellum Michaux, Swamp gooseberry-51 (PCCI, ALBC), in large sedge meadow N of Cloverdale Rd., W of Cedar Creek. HAMAMELIDACEAE Hamamelis virginiana L., Witch-hazel-96 (PCCI, ALBC), edge of trail S of Cloverdale Rd. in young woods.

Page  140 ï~~140 THE MICHIGAN BOTANIST Vol. 42 HYDROCHARITACEAE Elodea nuttallii (Planchon) St. John, Elodea-Skean 4071 (PCCI, ALBC), common submerged aquatic at shore of Brewster Lake. IRIDACEAE *Iris germanica L., Flag-106 (PCCI, ALBC), planted. Marshy area near gate and roadside, S of Cloverdale Rd. L virginica L., Southern blue flag-110 (PCCI, ALBC), T, common in moist depressions in thickets and sedge meadows. JUGLANDACEAE *Carya cordiformis (Wang.) K. Koch, Bitternut hickory-322 (PCCI, ALBC), CT, woods NE of Brewster Lake, S of Pierce Lake. C. ovata (Miller) K. Koch, Shagbark hickory-71, 308 (PCCI, ALBC), occasional in thickets and upland woods. *Juglans cinerea L., Butternut-302 (PCCI, ALBC), sandy ridge N of Batts Cottage. J. nigra L., Black walnut-467 (ALBC), most specimens along or near Cloverdale Rd., in disturbed thickets. JUNCACEAE Juncus acuminatus Michaux, Rush-455 (ALBC), common in moist soil along trail S of Cloverdale Rd. J. effusus L., Rush-456 (ALBC), occasional in dogwood thicket near tamarack swamp, along trail S of Cloverdale Rd. J. tenuis Willd., Path rush-173, 238 (PCCI, ALBC), Skean 4032 (PCCI, ALBC), moist disturbed ground throughout. JUNCAGINACEAE Triglochin palustre L., Arrow-grass-196 (PCCI, ALBC), open sedgy area with exposed soil near Brewster Lake. Local. LAMIACEAE *Blephilia hirsuta (Pursh) Benth., Downy wood mint-408 (ALBC), locally common in swampy thicket N of esker, near trail S of Cloverdale Rd. Glechoma hederacea L., Creeping Charlie-336 (ALBC), local in disturbed open areas along trail S of Cloverdale Rd. Lamium purpureum L., Dead-nettle-18 (PCCI, ALBC), in weedy barnyard N of Cloverdale Rd. Leonurus cardiaca L., Motherwort-156 (PCCI, ALBC), common in patches in weedy barnyard N of Cloverdale Rd. Lycopus americanus W. P. C. Barton, Water-horehound-223 (PCCI, ALBC), sedge meadows. L. uniflorus Michaux, Bugleweed-437, 464 (ALBC), CT, common in tamarack swamp. Mentha arvensis L., Wild mint-221 (PCCI, ALBC), 461 (ALBC), common in moist thickets and sedge meadows. Monarda fistulosa L., Wild-bergamot-148 (PCCI, ALBC), common in old fields and disturbed thickets. Prunella vulgaris L., Self-heal-162 (PCCI, ALBC), 462 (ALBC), CT, occasional in disturbed thickets. Also locally common in cedar and tamarack swamps. Scutellaria lateriflora L., Mad-dog skullcap-451 (ALBC), T, common in open edge of tamarack swamp, among sedges. LAURACEAE Lindera benzoin (L.) Blume, Spicebush-83, 286 (PCCI, ALBC), T, swamps and moist thickets throughout. Sassafras albidum (Nutt.) Nees, Sassafras-306 (PCCI, ALBC), 431 (ALBC), uncommon on sandy ridge N of Cloverdale Rd.; occasional on esker S of Cloverdale Rd. LEMNACEAE Lemna minor L., Duckweed-79 (PCCI, ALBC), seepage pools S of Cloverdale Rd., in moist sedgy thicket.

Page  141 ï~~2003 THE MICHIGAN BOTANIST 141 LENTIBULARIACEAE Utricularia vulgaris L., Common bladderwort-122 (PCCI, ALBC), in several cm water at shore of Brewster Lake. LILIACEAE *Allium canadense L., Wild garlic-Skean 4233 (ALBC), occasional in moist areas along trails. Erythronium americanum Ker Gawler, Yellow trout-lily--45 (PCCI, ALBC), on in woods on esker S of Cloverdale Rd. Hemerocallisfulva (L.) L., Orange day-lily-175 (PCCI, ALBC), escaped along Cloverdale Rd. Lilium michiganense Farw., Michigan lily-171 (PCCI, ALBC), locally common in sedge meadows, lakeside fen, and swampy thickets. Maianthemum canadense Desf., Canada mayflower-100 (PCCI, ALBC), CT, common in swamps and upland woods. Narcissus pseudonarcissus L., Daffodil-Skean 4030 (PCCI, ALBC), from planting near slab of old structure next to trail s of Cloverale Rd. Polygonatum pubescens (Willd.) Pursh, Small Solomon-seal-85 (PCCI, ALBC), T, occasional in conifer swamps. Smilacina stellata (L.) Desf., Starry false solomon-seal-109 (PCCI, ALBC), local in moist sedge meadows. Trillium grandiflorum (Michaux) Salisb., Common trillium-25 (PCCI, ALBC), CT, sporadic in woods and swamps throughout, mostly sterile plants. LIMNANTHACEAE Floerkea proserpinacoides Willd., False mermaid-35 (PCCI, ALBC), very common along trail in woods on esker S of Cloverdale Rd. LYTHRACEAE Decodon verticillatus (L.) Ell., Swamp loosetrife-Skean 4070 (PCCI, ALBC), shore of Brewster Lake. Also common in open marsh/young tamarack swamp S of Cloverdale Rd. Lythrum salicaria L., Purple loosestrife-154 (PCCI, ALBC), large masses in disturbed marsh near Cedar Creek. Also scattered near shore of Brewster Lake, and in sedge meadows. MAGNOLIACEAE Liriodendron tulipifera L., Tulip-tree-297 (PCCI, ALBC), C, common in cedar swamp E of esker S of Cloverdale Rd. MENISPERMACEAE *Menispermum canadense L., Moonseed-Skean 4242 (ALBC), occasional in swamps. MENYANTHACEAE *Menyanthes trifoliata L., Buckbean-127 (PCCI, ALBC), local in springy fen area on NE edge of Brewster Lake. NYMPHAEACEAE Nuphar advena (Aiton) Aiton f., Pond-lily-120 (PCCI, ALBC), in shallow water at E shore of Brewster Lake. Common. OLEACEAE Forsythia suspensa (Thunb.) Vahl, Forsythia-Skean 4150 (ALBC), planted at trailhead S of Cloverdale Rd. *Fraxinus americana L., White ash-285 (PCCI, ALBC), common in woods. Especially large specimens in woods N of Brewster Lake. *E nigra Marshall, Black ash-70, 300 (PCCI, ALBC), 409, 411, 468 (ALBC), CT, very common in swamps, occasional in open wetlands. Syringa vulgaris L., Common lilac-6 (PCCI, ALBC), planted shrubs along Cloverdale Rd. ONAGRACEAE *Circaea alpina L., Dwarf enchanter's-nightshade-378, 422 (ALBC), C, common in conifer swamps.

Page  142 ï~~142 THE MICHIGAN BOTANIST Vol. 42 C. lutetiana L., Enchanter's-nightshade-203, 207 (PCCI, ALBC), occasional in moist thicket S of Brewster Lake. Also in woods. Epilobium coloratumra Biehler, Willow-herb-256 (PCCI, ALBC), uncommon in moist thicket along Cloverdale Rd. *E. hirsutum L., Great hairy willow-herb-194 (PCCI, ALBC), uncommon in streamlet S of Brewster Lake. E. leptophyllum Raf., Willow-herb-Skean 4074 (PCCI, ALBC), occasional in lakeside fen. *E. strictum Sprengel, Willow-herb-Skean 4077 (PCCI, ALBC), uncommon at edge of moist thicket near Brewster Lake. ORCHIDACEAE Corallorhiza maculata Raf., Spotted coralroot-Skean 4087 (PCCI, ALBC), rare in hilly, mature woods N of Brewster Lake. Cypripedium parviflorum Salisb. var. makasin (Farw.) Sheviak [Cypripedium calceolus L. var. parviflorum (Salisb.) Fern., as given in Voss (1972)], Small yellow lady-slipper-66 (PCCI, ALBC), CT, common in moist thickets, swamps, and E shore of Brewster Lake. C. parviflorum Salisb. var. pubescens (Willd.) O. W. Knight [C. calceolus L. var. pubescens (Willd.) Correll, as given in Voss (1972)], Large yellow lady-slipper-87 (PCCI, ALBC), clumps locally common in sedge meadows. Also found on E shore of Brewster Lake. C. reginae Walter, Showy lady-slipper-136 (PCCI, ALBC), C, common in lakeside fen and sedge meadow, E and SE of Brewster Lake, under tamaracks and in the open. Also local in cedar swamp S of Cloverdale Rd. *Epipactis helleborine (L.) Crantz, Helleborine-429 (ALBC), one plant observed in cedar swamp uphill from creek, W of esker S of Cloverdale Rd. *Platanthera clavellata (Michx.) Luer [Habenaria clavellata (Michaux) Sprengel, as given in Voss (1972)], Club-spur orchid-465, 479 (ALBC), CT, occasional in conifer swamps on mossy logs/hummocks. P. psycodes (L.) Lindl. [H. psycodes (L.) Sprengel, as given in Voss (1972)], Purple-fringed orchid-466 (ALBC), photographic documentation. One plant, in sedge hummock near trail S of Cloverdale Rd. Spiranthes cernua (L.) Rich., Nodding ladies'-tresses-268 (PCCI, ALBC), common in sedge meadow/fen S of Brewster Lake. *S. lucida (H. H. Eaton) Ames, Shining ladies'-tresses-108 (PCCI, ALBC), a few plants growing on moist, sedgy trail S of Cloverdale Rd. Also uncommon in disturbed, seepy fen S of Brewster Lake. OROBANCHACEAE Conopholis americana (L.) Wallr., Squaw-root-Skean 4090 (PCCI, ALBC), common in mature hilly woods N of Brewster Lake. Epifagus virginiana (L.) W. P. C. Barton, Beech-drops-291 (PCCI, ALBC), very common on esker S of Cloverdale Rd., under beech trees. OXALIDACEAE *Oxalis fontana Bunge, Wood-sorrel-145 (PCCI, ALBC), uncommon in disturbed ground near trail S of Cloverdale Rd. and man-made wetland. PAEONIACEAE Paeonia albiflora Pall., Peony-Skean 4236 (ALBC), planted, persistent at slab near trailhead S of Cloverdale Rd. PAPAVERACEAE Sanguinaria canadensis L., Bloodroot-Skean 4026 (PCCI, ALBC), uncommon along trail S of Cloverdale Rd., in moist, sedgy thicket. PLANTAGINACEAE Plantago lanceolata L., English plantain-134 (PCCI, ALBC), common in gravelly entrance to trail S of Cloverdale Rd. P. rugelii Decne., Rugel's plantain-176 (PCCI, ALBC), in gravelly entrance to trail S of Cloverdale Rd.

Page  143 ï~~2003 THE MICHIGAN BOTANIST 143 POACEAE (GRAMINEAE) Agropyron repens (L.) Beauv., Quack grass-146a (PCCI, ALBC), forming large mat in disturbed soil near man-made wetland, S of Cloverdale Rd. *A. trachycaulum (Link) Malte, Wheatgrass-Skean 4053, 4059b (PCCI, ALBC), on ridge N of Batts Cottage. Agrostis gigantea Roth, Redtop-164, 167, 219 (PCCI, ALBC), common along Cloverdale Rd. *A. stolonifera L., Creeping bent-181 (PCCI, ALBC), growing in gravelly parking area at entrance to trail S of Cloverdale Rd. Andropogon scoparius Michaux, Little bluestem-314 (PCCI, ALBC), local on disturbed sandy ridge N of Batts Cottage. Arrhenatherum elatius (L.) Presl, Tall oatgrass-113 (PCCI, ALBC), along Cloverdale Rd. *Bromus ciliatus L., Fringed brome-259 (PCCI, ALBC), Skean 4059a (PCCI, ALBC), occasional in moist thickets. B. inermis Leysser, Smooth brome-112 (PCCI, ALBC), common along Cloverdale Rd. Calamagrostis canadensis (Michaux) Beauv., Blue-joint-Skean 4063 (PCCI, ALBC), moist soil along Cloverdale Rd. *Dactylis glomerata L., Orchard grass-111 (PCCI, ALBC), along Cloverdale Rd. *Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. Poverty grass-Skean 4032 (PCCI, ALBC), common along trail N of Cloverdale Rd. in disturbed soil. *Digitaria ischaemum (Schreber) Muhl., Crab grass-241 (PCCI, ALBC), common along Cloverdale Rd. Echinochloa muricata (P. Beauv.) Fern.-220 (PCCI, ALBC), common along Cloverdale Rd., growing with S. pectinata. *E. walteri (Pursh) Heller-Skean 4065 (PCCI, ALBC), common along Cloverdale Rd. *Elymus villosus Willd., Wild-rye-161 (PCCI, ALBC), moist sedgy thicket along Cloverdale Rd. *E. virginicus L., Wild-rye-Skean 4067 (PCCI, ALBC), moist soil along Cloverdale Rd. *Eragrostis minor Host [E. poaeoides Roem. & Schult., as given in Voss (1972)], Love grass-179 (PCCI, ALBC), gravelly parking area at entrance to trail S of Cloverdale Rd. Festuca obtusa Biehler, Nodding fescue-212 (PCCI, ALBC), common in mature hilly woods N of Brewster Lake. *F. pratensis Hudson, Meadow fescue-180 (PCCI, ALBC), along Cloverdale Rd. Glyceria striata (Lam.) Hitchc., Fowl manna grass-439 (ALBC), T, occasional in tamarack swamp. *Hierochlo" odorata (L.) Beauv., Sweet grass-114 (PCCI, ALBC), moist sedgy area along Cloverdale Rd., W of trails. *Holcus lanatus L., Velvet grass-Skean 4036 (PCCI, ALBC), occasional in disturbed sandy soil on ridge N of Batts Cottage. *Leersia oryzoides (L.) Sw., Cut grass-264 (PCCI, ALBC), large patches under tamaracks near Brewster Lake. *Milium effusum L.-346 (ALBC), C, occasional in cedar swamps. *Panicum capillare L., Witch grass-239 (PCCI, ALBC), occasional in moist open thicket along Cloverdale Rd. P. dichotomiflorum Michaux, Panic grass-240 (PCCI, ALBC), occasional in moist open thicket along Cloverdale Rd. Phleum pratense L., Timothy-138 (PCCI, ALBC), common in old fields and occasional in nearby fen. Phragmites australis (Cay.) Steudel, Reed-242 (PCCI, ALBC), locally common along Cloverdale Rd. in moist soil. *Poa alsodes Gray, Bluegrass-84, 101 (PCCI, ALBC), in seepy thicket/sedge meadow S of Cloverdale Rd. Also in disturbed burn areas on esker S of Cloverdale Rd. P. compressa L., Canada bluegrass-Skean 4038 (PCCI, ALBC), common in disturbed ground on ridge N of Batts Cottage. *P. pratensis L., Kentucky bluegrass-62, 166 (PCCI, ALBC), disturbed areas throughout. *Setaria glauca (L.) P. Beauv., Yellow foxtail-Skean 4064a (PCCI, ALBC), common along Cloverdale Rd.

Page  144 ï~~144 THE MICHIGAN BOTANIST Vol. 42 S. viridis (L.) P. Beauv., Green foxtail-Skean 4064b (PCCI, ALBC), common along Cloverdale Rd. Spartina pectinata Link, Cordgrass-216 (PCCI, ALBC), Skean 4066 (PCCI, ALBC), locally common in moist ditches along Cloverdale Rd. Vulpia octoflora (Walter) Rydb. [Festuca octoflora Walter, as given in Voss (1972)], Sixweeks fescue-Skean 4037 (PCCI, ALBC), occasional in disturbed ground on ridge N of Batts Cottage. POLEMONIACEAE Phlox divaricata L., Wild blue phlox-21 (PCCI, ALBC), 361 (ALBC), T, common in woods and occasional in tamarack swamp edges. *P paniculata L., Garden phlox-473 (ALBC), small colony near gate at entrance to S trail, in sedge meadow. Introduced. POLYGONACEAE *Polygonum arifolium L., Halberd-leaved tearthumb-428 (ALBC), common in open, mucky areas near Cedar Creek. *P. persicaria L., Lady's-thumb-245, 252 (PCCI, ALBC), common in moist open thicket along Cloverdale Rd. P. punctatum Ell., Smartweed-193 (PCCI, ALBC), growing in streamlet S of Brewster Lake. P. sagittatum L., Tear-thumb--457 (ALBC), Skean 4056 (PCCI, ALBC), moist thickets. *P. virginianum L., Jumpseed-209 (PCCI, ALBC), 423 (ALBC), Skean 4058 (PCCI, ALBC), CT, common in woods and swamps. Rumex crispus L., Curly dock-142 (PCCI, ALBC), common along trail S of Cloverdale Rd. in disturbed soil. R. obtusifolius L., Bitter dock-143 (PCCI, ALBC), common in disturbed soil along trail S of Cloverdale Rd. R. orbiculatus A. Gray, Great water dock-274 (PCCI, ALBC), T, uncommon in moist thicket along Cloverdale Rd. PORTULACACEAE Claytonia virginica L., Spring-beauty-29 (PCCI, ALBC), Skean 4028 (PCCI, ALBC), common in woods throughout. POTAMOGETONACEAE Potamogeton illinoensis Morong, Pondweed-Skean 4072 (PCCI, ALBC), common submerged aquatic in Brewster Lake. PRIMULACEAE Lysimachia ciliata L., Fringed loosestrife-151 (PCCI, ALBC), local in moist thicket S of Cloverdale Rd. L. lanceolata Walter, Loosetrife-434 (ALBC), local along sedgy trailside near tamarack swamp. L. thyrsiflora L., Tufted loosestrife-107 (PCCI, ALBC), common in large sedge meadow N of Cloverdale Rd., W of Cedar Creek. In low spots. Trientalis borealis Raf., Star-flower-98 (PCCI, ALBC), CT, common in conifer swamps. RANUNCULACEAE Actaea alba (L.) Mill. Ell., [A. pachypoda Ell., as given in Voss (1985)], White baneberry208 (PCCI, ALBC), uncommon in hilly woods N of Brewster Lake. Anemone virginiana L., Thimbleweed-147 (PCCI, ALBC), occasional in moist sedgy thicket N of Cloverdale Rd. *Anemonella thalictroides (L.) Spach, Rue-anemone-Skean 4025 (PCCI, ALBC), common along trail on esker S of Cloverdale Rd. Aquilegia canadensis L., Wild columbine-82 (PCCI, ALBC), T, locally common under tamaracks, in drier edges of swamps, and in sedge meadows. Caltha palustris L., Marsh-marigold-15 (PCCI, ALBC), Skean 4029 (PCCI, ALBC), CT, throughout in wet areas.

Page  145 ï~~2003 THE MICHIGAN BOTANIST 145 Clematis virginiana L., Virgin's bower-182 (PCCI, ALBC), T, occasional in thickets and conifer swamps. Coptis trifolia (L.) Salisb., Goldthread-38 (PCCI, ALBC), CT, common in conifer swamps. Hepatica americana (DC.) Ker Gawler, Round-lobed hepatica-23 (PCCI, ALBC), Skean 4024 (PCCI, ALBC), woods throughout. Ranunculus abortivus L., Small-flowered buttercup-16, 39 (PCCI, ALBC), CT, common in swamps. Also found in weedy barnyard N of Cloverdale Rd. R. hispidus Michaux, Swamp buttercup-44 (PCCI, ALBC), 358, 394 (ALBC), CT, common in swamps. R. recurvatus Poiret, Hooked crowfoot-37 (PCCI, ALBC), 345 (ALBC), CT, conifer swamps S of Cloverdale Rd. Thalictrum dasycarpum Fischer & Ave-Lall., Purple meadow-rue-152 (PCCI, ALBC), common in sedge meadow along Cloverdale Rd. T dioicum L., Early meadow-rue-27 (PCCI, ALBC), cutover woods area N of Cloverdale Rd., at E edge of large sedge meadow. RHAMNACEAE Rhamnus alnifolia L' Her., Alder-leaved buckthorn-73 (PCCI, ALBC), shrub in seepy thicket S of Cloverdale Rd., at edge of tamarack swamp. ROSACEAE Agrimonia gryposepala Wallr., Agrimony-150, 226 (PCCI, ALBC), common throughout, mostly in disturbed thickets. A. pubescens Wallr., Agrimony-430 (ALBC), occasional along trail on esker S of Cloverdale Rd. *Amelanchier interior Nielsen, Juneberry-72 (PCCI, ALBC), in sedgy thicket N of Cloverdale Rd. Crataegusfontanesiana (Spach) Steudel, Hawthorn-53 (PCCI, ALBC), in disturbed thicket along trail N of Cloverdale Rd. Fragaria virginiana Miller, Wild strawberry-10 (PCCI, ALBC), common in thicket near N trail entrance. Geum canadense Jacq., Avens-155 (PCCI, ALBC), C, common in disturbed dry thicket near Batts Cottage. Also scattered throughout. G. rivale L., Swamp avens-129 (PCCI, ALBC), CT, occasional in swamps and moist thickets. Malus pumila Miller, Apple-19 (PCCI, ALBC), a few trees in overgrown barnyard N of Cloverdale Rd. Potentilla argentea L., Silvery cinquefoil-Skean 4052 (PCCI, ALBC), uncommon on disturbed ridge N of Batts Cottage. P. fruticosa L., Shrubby cinquefoil-Skean 4079 (PCCI, ALBC), occasional in lakeside fen and in nearby moist thickets. P recta L., Rough-fruited cinquefoil-204b (PCCI, ALBC), along Cloverdale Rd. P. simplex Michaux, Common cinquefoil-61, 139 (PCCI, ALBC), occasional in disturbed thicket N of Cloverdale Rd. *Prunus americana Marsh., Wild plum-20 (PCCI, ALBC), occasional in open sedge meadow near Cedar Creek, N of Cloverdale Rd. P. serotina Ehrh., Wild black cherry-283 (PCCI, ALBC), T, common at periphery of swamps. P. virginiana L., Choke cherry-54 (PCCI, ALBC), in disturbed thicket along trail just N of Cloverdale Rd. *Rosa multiflora Murray, Multiflora rose-131 (PCCI, ALBC), near entrance to trail S of Cloverdale Rd. in disturbed parking area. R. palustris Marsh., Swamp rose-197 (PCCI, ALBC), occasional in sedge meadows and swampy thickets S of Brewster Lake. Rare in conifer swamps. *Rubus alleghaniensis Porter, Common blackberry-102 (PCCI, ALBC), trailside in esker woods S of Cloverdale Rd. *R. occidentalis L., Black raspberry-159 (PCCI, ALBC), disturbed thicket near Cloverdale Rd.

Page  146 ï~~146 THE MICHIGAN BOTANIST Vol. 42 R. pubescens Raf., Dwarf raspberry-77 (PCCI, ALBC), 332, 350 (ALBC), CT, common in conifer swamps. *R. strigosus Michaux, Wild red raspberry-202 (PCCI, ALBC), moist thickets S of Brewster Lake. RUBIACEAE Galium aparine L., Bedstraw-30, 43 (PCCI, ALBC), 440 (ALBC), CT, common in woods and swamps throughout. G. asprellum Michaux, Rough bedstraw-185, 192 (PCCI, ALBC), common in sedge meadows and marshy areas. G. circaezans Michaux, Bedstraw-321 (PCCI, ALBC), common in lightly wooded area S of Pierce Lake. *G. labradoricum (Wiegand) Wiegand, Bedstraw-117 (PCCI, ALBC), lakeside fen. Mitchella repens L., Partridge-berry-292 (PCCI, ALBC), CT, common in upland woods and in swamps. RUTACEAE Zanthoxylum americanum Miller, Prickly-ash-7, 288 (PCCI, ALBC), thickets in moist areas throughout. SALICACEAE *Populus balsamifera L., Balsam poplar-Skean 4068 (PCCI, ALBC), local in moist swales. P. deltoides Marsh., Cottonwood-280 (PCCI, ALBC), common. P. grandidentata Michaux, Bigtooth aspen-91 (PCCI, ALBC), colony near man-made wetland, S of Cloverdale Rd., near creek. *Salix bebbiana Sarg., Beaked willow-49, 284 (PCCI, ALBC), T, occasional shrub in large sedge meadow N of Cloverdale Rd., W of Cedar Creek. Also occasional in swamps. S. discolor Muhl., Pussy willow-52, 93 (PCCI, ALBC), 481 (ALBC), common in sedge meadows, moist thickets, and swamps. *S. exigua Nutt., Sandbar willow-68 (PCCI, ALBC), common in moist thicket N of Cloverdale Rd. SAXIFRAGACEAE Mitella diphylla L., Bishop's-cap--42 (PCCI, ALBC), CT, common in conifer swamps S of Cloverdale Rd. M. nuda L., Naked mitrewort-40 (PCCI, ALBC), CT, common in conifer swamps S of Cloverdale Rd. Parnassia glauca Raf., Grass-of-parnassus-269 (PCCI, ALBC), occasional patches in lakeside fen N of Cloverdale Rd. Saxifraga pensylvanica L., Swamp saxifrage-74 (PCCI, ALBC), occasional in seepy sedge meadows and thickets. SCROPHULARIACEAE Agalinis purpurea (L.) Pennel, Gerardia-263 (PCCI, ALBC), common in fen at Brewster Lake. Chelone glabra L., Turtlehead-249 (PCCI, ALBC), common in moist thickets. *Mimulus ringens L., Monkey-flower-222 (PCCI, ALBC), uncommon in low spots in ditch along Cloverdale Rd., growing among sedges. *Pedicularis canadensis L., Lousewort-48 (PCCI, ALBC), local in woods on N edge of esker N of Cloverdale Rd. P. lanceolata Michaux, Swamp lousewort-250 (PCCI, ALBC), common in moist thickets and fen near Brewster Lake. Verbascum thapsus L., Mullein-215 (PCCI, ALBC), Skean 4042 (PCCI, ALBC), common in disturbed, sandy soil on ridge N of Batts Cottage. *Veronica arvensis L., Field speedwell-47 (PCCI, ALBC), in disturbed areas along trail on esker N of Cloverdale Rd. *V serpyllifolia L., Thyme-leaved speedwell-339 (ALBC), C, uncommon creeping plant in cedar swamp.

Page  147 ï~~2003 THE MICHIGAN BOTANIST 147 SPARGANIACEAE Sparganium eurycarpum Engelm., Bur-reed-191 (PCCI, ALBC), uncommon along small streamlet S of Brewster Lake. TILIACEAE *Tilia americana L., Basswood-295 (PCCI, ALBC), CT, common in upland woods. Occasional in swamps. TYPHACEAE Typha latifolia L., Common cat-tail-200 (PCCI, ALBC), T, common around Brewster Lake. Also in tamarack swamp openings. ULMACEAE Ulmus americana L., American elm-282 (PCCI, ALBC), CT, small trees common in conifer swamps. Many trees dead/dying. URTICACEAE Boehmeria cylindrica (L.) Sw., False nettle-187 (PCCI, ALBC), T, common in sedge meadows. Occasional in open tamarack swamps. *Laportea canadensis (L.) Wedd., Wood nettle-210 (PCCI, ALBC), Skean 4078 (PCCI, ALBC), CT, common in hilly woods N of Brewster Lake. Also in wetlands. Pilea fontana (Lunell) Rydberg, Clearweed-Skean 4073 (PCCI, ALBC), T, common on shore of Brewster Lake. Urtica dioica L., Stinging nettle-211 (PCCI, ALBC), Skean 4061 (PCCI, ALBC), uncommon in hilly woods N of Brewster Lake. Also in disturbed soil near barn. VALERIANACEAE *Valeriana uliginosa (T. & G.) Rydb., Swamp valerian-128 (PCCI, ALBC), rare in springy open area on W shore of Brewster Lake. VERBENACEAE Phryma leptostachya L., Lopseed-205 (PCCI, ALBC), Skean 4088 (PCCI, ALBC), common in mature hilly woods N of Brewster Lake. Verbena hastata L., Blue vervain-225 (PCCI, ALBC), common in sedge meadows. VIOLACEAE Viola blanda Willd., Sweet white violet-1 (PCCI, ALBC), locally common in thicket near Brewster Lake, near trail. V canadensis L., Canada violet-32 (PCCI, ALBC), common in mature woods N of Brewster Lake. V conspersa Reichb., Dog violet-3 (PCCI, ALBC), Skean 4021 (PCCI, ALBC), moist thickets. V cucullata Aiton, Marsh violet-75, 121 (PCCI, ALBC), common in sedge meadows and seepages. V pubescens Aiton, Yellow violet-9 (PCCI, ALBC), common in woods and thickets. V rostrata Pursh, Long-spurred violet-36 (PCCI, ALBC), Skean 4023 (PCCI, ALBC), common in woods on esker S of Cloverdale Rd. V sororia Willd., Common blue violet-4 (PCCI, ALBC), large clumps in thicket near entrance trail N of Brewster Lake. *V striata Aiton, Cream violet-2 (PCCI, ALBC), clumps in thickets near trail entrance N of Cloverdale Rd. VITACEAE *Parthenocissus quinquefolia (L.) Planchon, Virginia creeper-364 (ALBC), CT, common in conifer swamps. *Vtis labrusca L., Fox grape-Skean 4062 (PCCI, ALBC), occasional near N trail along Cloverdale Rd.. V riparia Michaux, Grape-Skean 4091 (PCCI, ALBC), near Brewster Lake at canoe landing.

Page  148 ï~~148 THE MICHIGAN BOTANIST Vol. 42 ACKNOWLEDGMENTS In addition to those acknowledged in Slaughter and Skean (2003), we thank Melinda Kraft of the Instructional Technology Department of Albion College for her help in preparing Figure 1. This paper is based on a thesis submitted by the first author in partial fulfillment of requirements for the Bachelor of Arts with Departmental Honors in Biology at Albion College. LITERATURE CITED Chapman, K. A. 1986. Michigan natural community types. Michigan Natural Features Inventory. <http://www.dnr.state.mi.us/wildlife/heritage/mnfi/lists/natural_community_types.pdf>. (Accessed 19 March 2002). Flora of North America Editorial Committee. 1993. Flora of North America. Volume 2. Pteridophytes and gymnosperms. Oxford University Press, New York. Gleason, H. A. & Cronquist, A. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. Second edition. New York Botanical Garden, Bronx, New York. Holmgren, P. K, N. H. Holmgren, and L. C. Barnett. 1990. Index Herbariorum. Part I., Herbaria of the world. 8th ed. Regnum Vegetabile. Vol. 120. New York Botanical Garden, Bronx, New York. Kost, M. A. 2001. Natural community abstract for southern wet meadow. Michigan Natural Features Inventory, Lansing, MI. 6 pp. Michigan Natural Features Inventory. 1999a. Michigan's special plants. Endangered, threatened, special concern, and probably extirpated. Revised November 15, 2000. <http://www. dnr.state.mi.us/wildlife/heritage/mnfi/lists/special_plants_list.pdf>. (Accessed 22 May 2002). Michigan Natural Features Inventory. 1999b. Michigan's special animals. Endangered, threatened, special concern, and probably extirpated. Revised November 15, 2000. <http://www.dnr. state.mi.us/wildlife/heritage/mnfi/lists/ animal_list.pdf>. (Accessed 22 May 2002). Slaughter, B. S. & J. D. Skean, Jr. 2003. Comparison of cedar and tamarack stands in a relict conifer swamp at Pierce Cedar Creek Institute, Barry County, Michigan. Michigan Botanist 42: 111-127. Southwest Michigan Land Conservancy. 1998. Autumn quarterly newsletter. Privately published newsletter. Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and monocots. Bulletin of the Cranbrook Institure of Science No. 55 and University of Michigan Herbarium, Ann Arbor, Michigan. Voss, E. G. 1985. Michigan Flora. Part II. Dicots (Saururaceae-Cornaceae). Bulletin of the Cranbrook Institute of Science No. 59 and University of Michigan Herbarium, Ann Arbor, Michigan. Voss, E. G. 1996. Michigan Flora. Part III. Dicots (Pyrolaceae-Compositae). Bulletin of the Cranbrook Institute of Science No. 61 and University of Michigan Herbarium, Ann Arbor, Michigan.