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

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The North American Species of Pholiota

pileus context, narrow gills, and cystidia with much thicker walls. Also,
no rhizomorphs were noted for P. adirondackensis. P. flavopallida has
white lamellae when young and a white stipe at first. It perhaps is closest
to P. alabamensis but the type of that species has distinctly shorter (33 -50 /u long) pleurocystidia.
124. Pholiota agglutinata sp. nov.
Illustrations: Text figs. 271.
Pileus 1-4 cm latus, late conicus vel plano-umbonatus, pallide fulvus,
ad marginem pallide subluteus et appendiculatus. Lamellae adnatae, confertae, latae, albidae demum subfulvae. Stipes 2-4 cm longus, 3-5 mm
crassus, aequalis, solidus, intus pallidus, extus fibrillosus, deorsum demum
fulvus. Sporae 5.5-6.5(7) x 3.5-4 lt. Pleurocystidia et cheilocystidia 55-80
x 8-12(15) La, ad apicenl latae; sub-crassotunicata. Specimen typicum in
Herb. niv. Mich. conservatum est; legit prope Black Lee Creek, Payette National Forest, 31 Aug. 1958. Smith 60691.
Pileus 1-4 cm broad, obtuse with an incurved margin, expanding to
broadly conic, or finally plano-umbonate, ochraceous tawny to rusty
brown over disc, pale cartridge-buff to whitish toward the margin, viscid,
variously virgate-streaked with agglutinated fibrils, margin fringed at first
with veil remnants. Context cartilaginous, pallid; odor and taste mild;
rusty brown around worm holes, instantly malachite green in FeSO4;
context yellow with KOH.
Lamellae squarely adnate, whitish becoming dull rusty brown, close,
broad, edges even.
Stipe 2-4 cm long, 3-5 mm thick, equal, solid, pallid within, pith
green in FeSO4, fibrillose streaked from veil fibrils over surface, whitish
but soon rusty brown in basal area, apex white and silky, scarcely a
fibrillose zone left by white veil.
Spores 5.5-6.5 (7) x 3.5-4 u/, smooth, apical pore minute; shape
oblong, narrowly elliptic or slightly ovate in face view, in profile subelliptic to obscurely inequilateral; in KOH pale tawny, in Melzer's
reagent slightly paler; wall relatively thin (0.25 u ~+).
Basidia 21-24 x 5-6 /u, 2-, and 4-spored, clavate, hyaline to yellowish
in KOH or in Melzer's reagent. Pleurocystidia abundant, 55-80 x 8-12
(15) u., narrowly ventricose to subcylindric, with a long flexuous neck
5-7 /, diam. ending in a rounded to obtuse apex, sometimes capitate, wall
in neck thickened (0.5-1 /L thick), hyaline to yellowish in KOH, smooth,
with a long narrow pedicel. Cheilocystidia similar to pleurocystidia but
mostly slightly smaller and neck more often with yellow content. Caulocystidia none.
Gill trama with a floccose central strand of subparallel, thin-walled
smooth hyaline to yellowish hyphae, the cells short or greatly elongated,
hyphae 3-9 pu wide but in age the cells more inflated; subhymenium of
narrow (2-3 /x) gelatinous-interwoven hyphae. Pileus cutis a thick gela