The veiled species of Hebeloma in the western United States / Alexander H. Smith, Vera Stucky Evenson, and Duane H. Mitchel.

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The Veiled Species of Hebeloma

but diffusely reddish in mounts in Melzer's, color soon fading. Cuticle
of pileus a thin layer of gelatinized hyphae (an ixocutis), some with a
yellowish brown content as seen mounted in KOH, with pigmentencrusted walls next to the hypodermium. Hypodermium dark rusty
brown in KOH with pigment encrusted on the walls, "Hay's Brown" in
Melzer's and copious dextrinoid debris forming in the mount in 10-15
minutes. Hyphae of pileus trama typical for the genus. Clamp connections present.
Habit, habitat, and distribution.-Gregarious under hardwoods,
in Highlands Recreation Area, Oakland County, Michigan, October 4,
1977 (type, MICH).
Observations.-This taxon differs from var. pumiloides in having
larger spores and in a ~ cinereous to pallid veil. The red flush of the
trama in mounts made in Melzer's may be an additional difference.
108. Hebeloma sterlingii (Pk.) Murrill (o)
North Amer. Flora 10: 217. 1917
Inocybe sterlingii Peck, Bull. Torrey Club 33: 217. 1906.
Pileus 1.5-2.5 cm broad, convex to nearly plane, gray or clay
colored, center brownish, glabrous, slightly viscid at the center when
moist, margin incurved and obscurely fibrillose-appendiculate. Context
with a farinaceous taste.
Lamellae adnexed, pallid, becoming cinnamon-brown (from the
spores?).
Stipe 2.5-3.5 cm long, 2-4 mm thick, equal or enlarged near the
base, white over exterior, bay-red within, fibrillose from the veil which
leaves an evanescent ring (zone), at times the margin of the pileus
appendiculate with veil remnants as is the lower portion of the stipe.
Spores 9-12 x 5.5-7 Ixm, more or less inequilateral in profile
view, in face view elliptic to subovate, the wall 0.3 Ixm thick, surface
obscurely rugulose, color as revived in KOH pale yellow, not dextrinoid.
Hymenium.-Basidia 4-spored, 28-32 x 6-7 pxm. Pleurocystidia
none. Cheilocystidia 32-53 x 4-8 x 3-4 pJm, cylindric, usually slightly
enlarged near the base (~ fusoid-ventricose and the neck ~ elongated).
Lamellar and pilear tissues.-Trama of the lamellae of narrow
subparallel hyphae. Trama of pileus of radially disposed hyphae. Cuticle of pileus an ixocutis. Hypodermium cellular. Stipe cuticle of repent
dry hyphae. Clamp connections widely scattered on the cuticular hyphae of both pileus and stipe.
Habit, habitat, and distribution.-On soil under spruce trees, soli