Mycetinis scorodonius
No common name
Omphalotaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
No common name
Omphalotaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Species Information
Summary:
Features include 1) a dry, radially wrinkled cap that is orange brown to light brown, 2) narrow, adnate or adnexed gills that are whitish, 3) a tough, bald stem that is darker in its lower part, 4) a garlic odor and taste, 5) growth on coniferous debris, and 6) the size of the spores. Molecular work by (Wilson(1)) is used to justify renaming this Marasmius species as Mycetinis scorodonius (Fr.: Fr.) A.W. Wilson and Desjardin, and molecular work by Mata(1) is used to justify naming it Gymnopus scorodonius (Fr.: Fr.) J.L. Mata & R.H. Petersen.
Gills:
"adnate or adnexed, close or subdistant, narrow", rarely forked or interveined, 2-3 tiers of subgills; white or pale yellowish white, (Desjardin), "adnate or nearly free, crowded, narrow, often forked; yellowish pink to pallid", (Phillips)
Stem:
2-6cm x 0.05-0.2cm, equal, round in cross-section or rarely flattened, tough, subinsititious [somewhat insititious]; top brownish orange or paler, base brown, reddish brown or dark reddish brown; often shiny, bald, (Desjardin), 1.5-6cm x 0.1-0.3cm, round in cross-section to compressed, brittle; "yellowish white toward the top", dark brown in lower part; "dry, smooth, shining", (Phillips)
Odor:
alliaceous (Desjardin), of onions or garlic (Phillips)
Taste:
alliaceous (Desjardin), of onions or garlic (Phillips)
Microscopic spores:
spores 7.8-9 x 3.3-4.2 microns, elliptic or elongate-lacrymoid; basidia 4-spored, 25.8-36 x 6-9, clavate; pleurocystidia little differentiated, acuminate, cheilocystidia abundant, 16.8-33.6 x 5.4-9 microns, "cylindric or clavate, diverticulate", colorless, thin-walled, diverticula numerous, 2.1-9 x 1.2-2.1 microns, "irregular, knob-like, or cylindric, often lobed or branched", (Desjardin), spores 7-10 x 3-5 microns, elliptic, smooth, (Phillips)
Spore deposit:
white (Phillips)
Notes:
The distribution in the Pacific Northwest is uncertain due to confusion with other similar garlic-smelling species, particularly Mycetinis copelandii. There is a 2007 collection from BC at the University of British Columbia. In CA Desjardin indicates only a single collection from Humboldt County. It is found also in Europe.
EDIBILITY
yes (Phillips)
Habitat and Range
SIMILAR SPECIES
Other spp. with a garlic odor include Mycetinis salalis (pubescent stem, on salal or Oregon grape, much longer spores), Mycetinis copelandii (pubescent stem, non-insititious stem, growth on leaves especially oak, much longer spores), Mycetinis alliaceus (somewhat pubescent stem, longer spores), and Marasmiellus filopes (small cap, minutely pruinose stem, insititious on needles). Marasmius chordalis has been reported from British Columbia on dead rhizomes of bracket fern by Oluna Ceska (collections at University of British Columbia), and Gymnopus androsaceus can occur on fern fronds.Habitat
scattered to gregarious on coniferous debris in forests with Tsuga heterophylla (Western Hemlock), (Desjardin), "scattered or in groups on debris, bark, twigs, grass, needle duff", (Phillips), fall, on twigs and debris, commonly on dead fern stems or needles in Douglas-fir forests, (Ammirati), spring, summer, and fall, (Miller)
Status Information
Synonyms
Synonyms and Alternate Names:
Marasmius scorodonius (Fr.) Fr.