The North American species of Pholiota, by Alexander H. Smith and L. R. Hesler.

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The North American Species of Pholiota

2. Always fruiting on burned ground around charcoal....................................................... Section Carbonicolae'
2. Not as above, but habitat typically lignicolous, more rarely on
soil or humus........................................ 3
3. Spores 7-10 X 5-6 p but if 7-9 x 4-5 pu try this choice also........................ Section Spumosae
3. Spores smaller 5-7.5 (8) x 3-4.5 (5) /,...... Section Lubricae
Stirps Virgata
The characteristic olive tones are evident in both the fresh material
and the dried specimens. Aside from the color and streaked appearance
of the pileus the stirps is very close to stirps Occidentalis. As yet the
stirps contains only the type species and P. pseudograreolens, which
has a strong odor.
119. Pholiota virgata sp. nov.
Illust-rtions: Text figs. 259-261.
Pileus 3-10 cm, latus, demlrnm late convexus, viscidl(.s, glaber-, llteo
br1unenus. Contextus pallidus. Lamellae confertae, latae, adnatac, pallidac
bubalinae. Stipes 4-5.5 cm longg.s, 6-10(12) mm crassus, pallidus subfibrillosus. Sporae (5.5)6-7(7.5) x 3.5-4(1.5) tj. Plerocystidia 48-67 x 10-14 A.,
fusoide-ventricosa; tunica 0.5-0.75,u crassa. Specimen typicum in Herb.
Univ. Mich. conservatuim est; legit prope Santa Fe, New Mexico. Aug.
1957. Chas. Barrows 542.
Pileus 3-10 cm broad, convex, expanding more or less wavy, buffy
brown to near tawny-olive, margin paler (yellowish-brown), virgate,
slimy to viscid, margin even. Context pallid; taste insipid.
Lamellae adnate then emarginate, pale-buff to deep-buff then dull
yellow-brown, close, medium broad.
Stipe 4-5.5 cm long, 6-10 (12) mm thick, more or less equal or enlarged at base, dingy-pallid, becoming darker below, striate, with scattered
fibrils, becoming hollow. Veil white, arachnoid.
Spores (5.5) 6-7 (7.5) x 3.5-4 (4.5) pt, smooth, apical pore present
but minute; shape in face view elliptic to ovate, in profile elliptic to
very obscurely inequilateral, in KOH dull cinnamon, in Melzer's reagent
paler; wall about 0.25 /. thick.
Basidia 21-25 x 5-6 p,, 4-spored, narrowly clavate, hyaline in KOH
and nearly so in Melzer's reagent. Pleurocystidia 48-67 x 10-14 p,, fusoid
ventricose to subfusoid, rarely obclavate, apex subacute to subcapitate,
surface smooth, wall thickened to 0.5-0.75 pu, content homogeneous and
hyaline to ochraceous. Cheilocystidia 28-45 (60) x 6-12 /u, similar to
pleurocystidia or smaller and subfusoid to obclavate, walls smooth and
thin to slightly thickened, content homogeneous. Caulocystidia 40-70 x