Published: Syll. Fung. 5: 805 (1887)
Taxonomic status: This is a Pholiota.
Notes: Current name is: Pholiota parvifructa (Peck) Beker & U. Eberh., Mycologia 114: 381 (2022).
Basionym: Agaricus parvifructus Peck [as "Agaricus (Hebeloma) parvifructus"] (1885)
Types: UNITED STATES: New York: West Albany, Albany (approx. 42.6575°N, 73.8237°W, alt. approx. 70 m a.s.l.) on sandy soil in coniferous woodland under Pinus sp., Oct. 1885, C.H. Peck (Holotype. herbarium acc. no. NYS-F-002271, HJB1000260).
Homotypic synonyms: Derminus parvifructus (Peck) Henn. (1898)
Diagnosis: Pileus convex, then expanded, slightly viscid, dingy-white, becoming grayish-brown or pale-chestnut colored with age, often paler on the margin; lamellae broad, moderately close, slightly emarginate, at first white, then brownish-ochraceous; stem equal, silky-fibrillose, solid, whitish, stained with ferruginose or brown toward the base, pruinose and substriate at the apex; spores brownish-ochraceous, .00025 to .00028 in. long, .00016 to .00018 broad; veil white, arachnoid. Plant three to four inches high, pileus two to three inches broad, stem three to five lines thick. Sandy soil in pine woods. West Albany. Oct. The spores of this plant are smaller than usual in species of this subgenus, and this character has suggested the specific name. The lamellae are at first concealed by the copious, webby filaments of the veil. The species belongs to the section INDUSIATI.
Commentary: The taxon was originally described by Peck (1885) as Agaricus (Hebeloma) parvifructus. The spores of the type are ellipsoid, smooth, and nondextrinoid, on average 6.5 × 4.1 μm. Both the cheilocystidia and pleurocystidia are ventricose. Morphology suggests that this is a Pholiota, but we are not certain to which, if any, described taxon in the genus it is synonymous. As a consequence, we here recombine the species into Pholiota. Murrill (1917) cites the species as only known from the type locality; Hesler in his unpublished manuscript on North American species of Hebeloma, cites several collections assigned by Peck to this taxon that on re-examinations were identified as Inocybe.
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