Public Description of Pholiota (Fr.) P. Kumm.

Title: Public Description
Name: Pholiota (Fr.) P. Kumm.
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Description status: Unreviewed

General Description:

Key to Subgenera of Pholiota
1. Pileus cuticle lacking any gelatinous layers (surface granulose to fibrillose or scaly, or rarely canescent, glabrous and hygrophanous ……………………………………………………………………………………………… 2 1. Pileus cuticle with a layer of gelatinized hyphae in some part (surface may be glabrous to scaly)…….. 4
2. Pileus glabrous and hygrophanous or merely silky to canescent over the surface (see Subg. Hemipholiota) …………………………………………………………………………….. Subg. Hygrotrama 2. Pileus dry, scaly to granulose or coarsely fibrillose …………………………………………………………… 3
3. Pileus and stipe scaly to coarsely fibrillose (but not granulose) and chrysocystidia (or similar cells) present in hymenium……………………………………………………………………………………. Subg. Pholiota 3. Pileus fibrillose, scaly or granulose, lacking chrysocystidia in hymenium ……………………. Subg. Flavidula 4. Pleurocystidia absent; spores at least weakly dextrinoid………………………………Subg. Flammula 4. Not as above ……………………………………………………………………………………………………………….. 5
5. Pileus and stipe typically distinctly scaly at the time the veil breaks; chrysocystidia or somewhat similar structures present in hymenium …………………………………… Subg. Pholiota Sect. Adiposae 5. Not as above …………………………………………………………………………………………………………………………… 6 6. Pleurocystidia present and prominently projecting Subg. Flammuloides 6. Pleurocystidia not as above …………………………………………………………………………………………… 7
7. Pleurocystidia absent or if present as leptocystidia then not projecting appreciably …………………………. ………………………………………………………………………………………………………….. Subg. Hemipholiota 7. Pleurocystidia present as chrysocystidia …………………………………………………Subg. Phaeonaematoloma

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Diagnostic Description:

Description of Genus
Pileus diameter variable from species to species (1‐20 cm), pileus convex to conic, more rarely hemispheric, then plane, at times umbonate, more rarely depressed; dry, moist, viscid or slimy; of various colors; scaly, fibrillose, or glabrous; context thick or thin, often more or less concolorous with the surface; odor and taste mild or not distinctive, or more rarely distinctive; lamellae variously attached but rarely decurrent, brownish at maturity, paler at first and then white, pallid, yellowish, or brownish; narrow to broad; close to distant; stipe often darker colored at the base, scaly, fibrillose, or nearly glabrous, dry or (very rarely) viscid, solid or hollow, central; inner veil arachnoid and fugacious, more rarely membranous and forming a persistent, superior to median annulus, sometimes appendiculate; outer veil virtually undeveloped, or in many species leaving remnants as fibrils or conspicuous scales, rarely the scales viscid; spores ellipsoid to ovoid or subovoid in face view, often inequilateral to phaseoliform in profile, wall medium thin to moderately thick and double, smooth, germ‐pore present, in some species obscure or not discernible, sometimes broad and the spore‐end truncate; basidia clavate, 2‐ 4‐spored; pleurocystidia present in many species, sometimes as chrysocystidia, absent in others; cheilocystidia almost always present and either similar to the pleurocystidia (if present) or different, more rarely as chrysocystidia; gill trama usually subparallel, sometimes more or less interwoven, at times forming a mediostrate and then the subhymenium gelatinous; pileus trama more or less homogeneous, its hyphae disposed radially to interwoven; cuticle filamentous, often of repent hyphae and dry, or again the surface hyphae gelatinizing and forming a gelatinous zone which usually rests on a distinct zone of brownish hyphae—a hypodermium, or hypodermium not differentiated; pileocystidia rare; clamp connections present, and found in nearly all species (rarely not found); caulocystidia at the apex absent, or present and then scattered or in tufts, at times similar to the lamellar cystidia; growing on wood, sawdust, debris, humus, soil, or more rarely in sphagnum beds or on charcoal.
TYPE SPECIES: Pholiota squarrosa.


Description author: Image Sharer (Request Authorship Credit)


Created: 2018-12-20 01:07:11 EST (-0500) by Image Sharer (image sharer)
Last modified: 2018-12-20 01:07:11 EST (-0500) by Image Sharer (image sharer)
Viewed: 2 times, last viewed: 2019-06-06 10:31:42 EDT (-0400)