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

Smith ~ Hesler

291

Melzer's reagent. Pleurocystidia scattered to rare, 35-53 x 8-15,t, fusoidventricose with obtuse apex to ovate-pedicellate or ventricose mucronate,
content "empty," wall very thin; (in the type most cystidia remain collapsed), smooth. Cheilocystidia (28) 35-46 (53) x 4-12 F., fusoid-ventricose to clavate or utriform (variable in shape), thin-walled, smooth, content homogeneous and hyaline. Caulocystidia none.
Gill trama a central area of parallel to interwoven thin-walled smooth
hyphae 3-5 /u diam. but cells inflating in age, hyaline to yellowish in
KOH, content not distinctive; subhymenium a thin layer of narrow
gelatinous hyplae hyaline to yellowish in KOH. Pileus cuticle a tangled
layer of hyphae 3-6 /u diam. with rather heavily incrusted walls and only
sulgelatinous in KOH, hyphae yellowish to tawny in KOH, those at or
near surface collapsing in age; hypodermium a distinct region fulvous in
KOH from incrusted floccose hyphae, hyphal cells 4-12,U or more in
diam. Context of interwoven inflated hyphal cells with smooth yellowish
thin walls. All hyphae and hyphal end-cells inamyloid. Clamp connections present.
HABIT, HABITAT, AND DISTRIBUTION: Among sphagnum, in swamps,
Massachusetts, September. Type studied.
OBSERVATIONS: In the type pleurocystidia are rare and we could find
no caulocystidia. In P. paludosella we found the pleurocystidia more
abundant, and caulocystidia are readily demonstrated. In both P. sphagnicola and P. paludosella the curious apical thickening around the germ
pore of the spore shows on a few spores. A study in culture of both of
these would be highly desirable. In recognizing both we are simply going
on the evidence available but have reservations to the effect that both
may simply be extremes of one species.
156. Pholiota paludosella (Atk.) comb. nov.
Naucoria palldosella Atkinson, Journ. Myc. 12: 193. 1906.
Illustrations: Text figs. 342-346; pls. 60b, 69a, 73.
Pileus (2) 3-5 (6) cm broad, obtuse to convex with an incurved
margin, expanding to broadly convex to plane and at times with an
obtuse umbo; ground color pale cream-color except for the tawny, scaly
disc; surface more or less decorated with fibrillose squamules or platches
from the remains of the buff-colored veil, eventually more or less glabrescent; margin fringed with veil remnants at first; viscid but soon dry.
Content pliant, yellowish; odor mild or fragrant; taste not distinctive.
Lamellae sinuate, yellowish becoming cinnamon-brown and drying
paler, close, narrow to moderately broad, pliant and gelatinous, edges
even.
Stipe 3-6 (8) cm long, 3-4 (5) mm thick, apex pruinose and yellowish, becoming tawny to russet below, equal or nearly so, or bulbous,
pliant, floccose-squamulose up to the annular fibrillose zone left by the
broken veil, more or less glabrescent. Veil buff colored.