The boletes of Michigan, by Alexander H. Smith and Harry D. Thiers.

LECCINUM

181

fusoid-ampullaceous,* thin-walled or wall up to 0.7 p thick; basidioles
small, hyaline to faintly pigmented.
Habit, habitat, and distribution.-In gardens, open woods, and flatwoods with Quercus on sandy ground or on humus, solitary or in small
groups, mostly in July, Florida.
Observations.-We have some collections which may possibly
belong here, but we are withholding an account of them at this time.
The data in our description are taken from Singer.
87. Leccinum glutinopallens Smith, Thiers, & Watling
Mich. Bot. 6:131. 1967
Pileus 6-7 cm broad, broadly convex, margin even, glabrous, slimyviscid, pallid along the margin, dingy vinaceous-buff over the disc,
margin even and fertile. Context very soft, white, when cut slowly
staining pinkish tan, with a bluish green line developing above the tubes
by maturity, pale bluish with FeSO4 and orange-tan in Melzer's.
Tubes about 15 mm deep, ventricose and nearly free, wood-brown
or darker at maturity; pores small and round, grayish pallid, when
bruised staining avellaneous or finally dingy brown.
Stipe 6-8 cm long, 10-15 mm thick, equal to clavate at base,
pallid becoming variously stained pinkish tan from handling, very minutely ornamented by fine points and streaks, the ornamentation pallid
at first becoming pinkish tan or slightly darker, solid, pallid within and
when sectioned soon stained vinaceous-tan and in places greenish blue.
Spores 15-19 X 5-6.5 tp, smooth, in face view broadly fusiform, in
profile inequilateral with a distinct suprahilar depression, pale ochraceous-tawny individually in KOH, pale tan in Melzer's but some becoming reddish tawny, wall -0.5 p thick, no apical pore observed.
Basidia 4-spored, 20-25 X 10-14 p, clavate, hyaline in KOH.
Pleurocystidia 38-56 X 11-16 p, fusoid-ventricose, apices subacute, content hyaline to pale smoky ochraceous. Cheilocystidia basidiole-like to
somewhat fusoid. Caulocystidia the usual mixture of large and small
fusoid-ventricose cells but with smooth walls, content when revived in
KOH only pale ochraceous, and with some debris adhering to them.
Pileus trichodermium a tangled layer of gelatinous smooth-walled
hyphae 4-8 p wide, the cells mostly 30-300 p long, hyaline to yellowish
in KOH, the cells disarticulating and the end-cells tubular to somewhat
cystidioid, with hyaline to weakly ochraceous content in Melzer's or in
some hyphae with darker granular material. Subcutis and context
hyphae adjacent to it lacking distinctively colored contents when revived
in Melzer's. Clamp connections absent.