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

Smith ~ Hesler

75

ture is also against placing it in Phaeomarasmius even though the pileus
is a trichodermium. The question of the presence of a veil also needs
further study from fresh material as the original description does not
actually rule out the possibility of a rudimentary veil being present.
25. Pholiota cyathicola (Murrill) comb. nov.
Naucoria cyathicola Murrill, Mycologia 4: 77. 1912.
Pileus 7-12 mm broad, hemispheric-umbonate to convex, isabelline,
umbo pale-fulvous, dry, innately fibrillose, margin even.
Lamellae squarely adnate, whitish to pale ochraceous, distant.
Stipe 2 cm long, 1.5 mm thick, cylindric, isabelline, fibrillose, cartilaginous. Veil not evident except as fibrils on stipe and pileus.
Spores 6-7 x 3.5-4 f/, elliptic in face view, ends often subacute, in
profile slightly inequilateral, smooth, dark tawny in KOH, no germ pore
evident.
Basidia 16-20 x 4-5.5 /, 4-spored. Pleurocystidia 44-69 x 9-12 /u
and fusoid-ventricose, or saccate-pedicellate, imbedded and 30-45 x 10-18
f, thin-walled, smooth, hyaline or nearly so in KOH. Cheilocystidia
28-37 X 8-12 /,, fusoid-ventricose with obtuse apex, smooth, thin-walled.
Gill trama with a central non-gelatinous stratum of subparallel
hyphae 2-4 p, broad; subhymenium gelatinous. Pileus cutis of nongelatinous brown obscurely incrusted hyphae more or less appressed to
surface, beneath this a layer of appressed non-gelatinous hyphae. Clamp
connections present.
HABIT, HABITAT, AND DISTRIBUTION: On dead trunks of tree ferns,
Jamaica. Type studied.
OBSERVATIONS: This species, obviously related to P. corticola in the
structure of the gill trama, presence of pleurocystidia and spore features,
is, because of the gelatinous subhymenium somewhat peripheral in subg.
Flavid la.
Stirps Erinacea
This stirps features characteristically thick-walled elements in the
trichodermium of the pileus and is peripheral in the genus.
26. Pholiota erinacea (Fr.) Rea, Brit. Basid. P. 121. 1922.
Agaricus erinaceus Fries, El. Fung. p. 33. 1828.
Naucoria erinaceus (Fr.) Gillet, Champ de Fr. p. 543. 1874.
Dryophila erinacea (Fr.) Quelet Enchir. Fung. p. 69. 1886.
Agaricus aridus Persoon, Myc. Eur. 3: 193. 1828.
Phaeomarasmius aridus (Pers.) Singer, Lilloa 22: 577. 1951.