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

244

THE BOLETES OF MICHIGAN

bullet-shaped to short bulletlike or subglobose (rarely the latter), the
cells showing a distinct tendency to disarticulate, walls smooth in KOH,
in Melzer's the cuticular elements in the zone near the subcutis and the
subcuticular hyphae showing some tawny-brown incrusting material in
Melzer's but the cell content yellowish and homogeneous. Hyphae of the
subcutis and context yellow in Melzer's.
Notes: The iodine reactions of the type are not quite the same as
those of the Michigan material, but here we do not have a basis for
critical evaluation since we do not know what the specimens have been
subjected to by way of treatment or the effect of time on the chemicals
giving the reactions with iodine. The positive characters connecting the
Michigan material to the type are the yellow tones of the dried pileus,
the inflated short cells in the pileus cuticle, the weakly dextrinoid incrustations on the hyphae of the subcutis, the relatively small spores,
wide pores, and lack of any change to blue on the pores when fresh.
The type is apparently a mixture of 2 species: We designate as
lectotype the material designated in packets 1, 2, and 3 in the box
housing the type collection at Albany. These represent the concept of a
thin-stiped species, which is what Peck described. Loose in the box are
certain basidiocarps which as dried have stipes about 2 cm thick at the
apex and pilei about 8 cm broad. These have a distinct fine reticulum
like B. tenacipes, which is not the kind of reticulum Peck described in
his original description.
126. Boletus nancyae Smith & Thiers, sp. nov.
Pileus 4-10 cm latus, convexus, siccus, fibrillose squamulosus, subspadiceus. Contextus pallide luteus, immutabilis. Tubuli 0.9-1.3 cm
longi, ochraceolutei; pori 1-1.5 mm lati, ochracei, immutabiles. Stipes
4-9 cm longus, 8-15 mm crassus, reticulatus, deorsum luteo-myceliosus.
Sporae 11-13.5 X 3.84.5 u. Specimen typicum in Herb. Univ. Mich.
conservatum est; prope Burt Lake, Cheboygan County, July 8, 1967,
legit N. J. Smith (A. H. Smith 74469).
Pileus 4-10 cm broad, convex becoming broadly convex; surface
dry and tomentose-squamulose, in dried specimens the ornamentation
appearing as appressed-fibrillose squamules, near snuff-brown to bister
when fresh (dingy yellow-brown), when dried with a strong ochraceous
ground color showing beneath or between the squamules. Context
yellowish and drying pale yellow, odor of dried basidiocarps rather
strong (but difficult to define), unchanging when injured, NH4OH on
cuticle when fresh purplish before darkening.