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

Smith - Hesler

295

nent pleurocystidia often coated over the exterior with a coagulated
mucilaginous material, and though fusoid-ventricose the ventricose lower
part is often not much wider than the neck. The color of the pileus and
thickness of the stipe distinguish P. chromocystis immediately.
158. Pholiota chromocystis sp. nov.
Pileus 3-5 cm latus, obtusus deinde obtuse umbonatus, anrantiobrunn eu.s, margine virido-flavus, viscidus, glabrosus vel sltbglabrosu.s.
Caro olivacea deinde flavida; odore et gustu mitis. Lamellae adnatac,
flavae deinde aurantio-brunneae, marginibuls perflavae, antgu(stae, confertac. Stipes 6-10 cm longus, 3-6 mm crassus, concolor, leviter fibrillosils.
Sporae 6.5-8 x 4-4.5 p, Icves, ellipsoideae demum phasioliformes. Pleurocystidia 40-66 X 10-17 /I, aurea demum ferruginea vel hyalina; cheilocystidia sinilia, minora. Caulocystidia 26-50 x 10-18 it, clavata demutn
siibfusoidea. Culticula gelatinosa. Specimen typicum in Herb. Univ. Mich.
conservatuim est; lectum in Sugar Island, Michigan, August 10, 1965.
Smith 72040.
Pileus 3-5 cm broad, obtuse, expanding to obtusely umbonate, surface viscid, glabrous or nearly so, color bright greenish yellow over
marginal half, becoming somewhat orange-fulvous over disc much as in
NaeTmnatoloma fasciczilare. Context thin, pliant, olivaceous moist, yellowish faded, with FeSO4 green; odor and taste not distinctive.
Lamellae adnate, crowded, narrow, yellow when young, in age
orange-fulvous, soon darker rusty brown where damaged, in some the
edges bright yellow.
Stipe 6-10 cm long, 3-6 mm thick, equal, fibrous, becoming hollow,
pith orange-fulvous and cortex pale greenish yellow, surface concolor with
cap margin or base soon pale tawny and drying about this color (not
darkening markedly), thinly fibrillose, no annulus or distinct veil line
present.
Spore deposit bright rusty brown on surrounding debris; spores
6.5-8 x 4-4.5 /., smooth, with a minute pore, in shape elliptic to slightly
bean-shaped in profile, nearly oblong in face view, rusty brown in KOH,
paler in Melzer's.
Basidia 22-24 X 5-6 fi, 4-spored, hyaline in KOH in fresh condition,
lemon-yellow as revived in KOH. Pleurocystidia 40-66 x 10-17 /I, hyaline
or with golden-ochraceous to rusty ochraceous content, thin-walled,
smooth as revived in KOH but at first often with an incrusted zone above
the ventricose portion, apex subacute to obtuse, thin-walled. Cheilocystidia clavate to subfusoid to shaped like the pleurocystidia only
smaller, bright yellow in KOH to hyaline. Caulocystidia scattered to
clustered, not abundant, 26-50 x 10-18 i,, clavate to subfusoid, yellow
ish to hyaline in KOH.
Gill trama with a central area of non-gelatinous parallel hyphae
with inflated orange-fulvous to ochraceous cells (in KOH), some with