Name: Hygrocybe parvula (Peck) Murrill
Most Confident Observations:
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First person to use this name on MO: Erlon Bailey


Rank: Species

Status: Accepted

Name: Hygrocybe parvula

ICN Identifier: missing

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Author: (Peck) Murrill

Citation: North American Flora 9 (6): 378 (1916) [MB#546447]

Deprecated Synonyms: Hygrocybe parvula (Peck) Pegler, Hygrophorus parvulus Peck, Pseudohygrocybe parvula (Peck) Kovalenko, Hydrocybe parvula (Peck) Murrill

Misspellings: Hygrocybe parvulus


Domain: Eukarya

Kingdom: Fungi

Phylum: Basidiomycota

Class: Agaricomycetes

Order: Agaricales

Family: Hygrophoraceae

Genus: Hygrocybe

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Notes on Taxonomy: [Edit]

Herbarium records: NYS

Collected by: C.H. Peck
Location details: Northville and Lake Pleasant
Country (state): New York

Brief Description: [See More | Edit]
North American species of Hygrophorus LR Hesler, AH Smith – 1963

103 Hygrophorus parvulus Pk. N. Y. State Mus. Ann. Rept. 28: 50. 1879 Hydrocybe parvula (Pk.) Murr., North Amer. Flora 9: 378. 1916. Illustrations: Fig. 53. Peck, N. Y. State Mus. Ann. Rept., pl. 1, figs. 20-24. Smith and Hesler, Lloydia 5, pl. 15b.

Pileus 1-3 cm broad, obtuse to convex, sometimes with a depressed disc, glabrous, moist, at times subviscid, hygrophanous, “amber yellow,” “apricot yellow,” “light cadmium,” “straw yellow,” or “wax yellow,” opaque and a paler yellow when faded, sometimes “orange” to “cadmium yellow” moist, fading to “baryta-yellow,” translucent striate.

Context brittle, waxy, thin, concolorous with the surface, unchanging; odor and taste mild.

Lamellae decurrent, subdistant, broad, subtriangular, intervenose, whitish or pale yellowish to “wax yellow,” edges even.

Stipe 3-6 cm long, 2-3 mm thick, “citron yellow” to “amber yellow,” base frequently becoming tinged “grenadine red” or dull rufous, at times the lower half or more tinged rufous or ochraceous salmon, terete or compressed, narrowed at the base or equal, fragile, glabrous, dry or moist, not viscid, hollow.

Spores 5-7(8.5) x 3.5-5 t, ellipsoid, smooth, pale yellow in Melzer’s reagent. Basidia 26-40 × 5-7 tu, 2- and 4-spored. Pleurocystidia and cheilocystidia not differentiated. Gill trama of subparallel hyphae, the cells 8-20,/ long, 10-30 u broad. Cuticle of repent hyphae, a few surface hyphae appearing slightly gelatinous, some free ends more or less erect. No hypodermium differentiated. Pileus trama of radial hyphae. Clamp connections present on the cuticular hyphae.

HABIT, HABITAT, AND DISTRIBUTION-Gregarious on soil and humus, in deciduous and mixed woods, and under rhododendron, Maine, Massachusetts, New York, Tennessee, North Carolina, Michigan, Oregon, California, and Canada, June-October. Dennis (1961) has reported it from Venezuela.
MATERIAL STUDIED-CALIFORNIA: Smith 8545. MAINE: Bigelow 3986, 4047, 4074, 4619, 4620, 4621, 4622; Rea 486; Rea & Woodbury, Denmark, Aug. 6, 1940. MASSACHUSETTS: Bigelow 7656, 7879, 8603, 8604, 8833, 8902, 9055. MICHIGAN: Kauffman, Bay View, July 19, 1905, and Marquette, Aug. 27, 1906; Mains 32628; Smith (Brooks 1290, 1304), 15216, 57133. NEW YORK: Peck (type, from Northville, August), also from Lake Pleasant, August. NORTH CAROLINA: Hesler 14349, 17948, 19351, 20513, 22302, 23209; Kauffman, Hot Springs, Aug. 22, 1924; Smith & Hesler 11324. OREGON: Kauffman, Mt. Hood, Oct. 14, 1922. TENNESSEE: Hesler 4453, 17695, 18602, 22409, 23504. GREAT SMOKY MOUNTAINS NATIONAL PARK: Hesler 17213; Smith 9844, 10745. CANADA: (Quebec) Bigelow 4846, 6065.

OBSERVATIONS-A noticeable feature in this species, as pointed out by Peck (1907), is found in the stipe which is often more highly colored (pinkish red) than the pileus. Notes on the type follow: Spores 5-7 × 3.5-5 /,, ellipsoid, smooth, non-amyloid. Basidia 30-39 × 6-7,/, 2- and 4-spored. Pleurocystidia and cheilocystidia none. Gill trama subparallel to parallel, hyphal cells 20-63 × 10-27,t. Cuticle of appressed or a few more or less erect hyphae. Clamp connections present on the cuticular hyphae.

Hesler, L. R., & Smith, A. H. (1963). North American species of Hygrophorus.

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