Hemimycena subimmaculata
no common name
Mycenaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Mycenaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
{See also Hemimycena Table.} Features include small size, white color, a finely striate cap, decurrent, distant, narrow gills, a thread-like stem, growth on plant debris or wood, and microscopic characters including elongate, presumably inamyloid spores. It was described by Smith in Mycena Section Albomycena.
Gills:
long decurrent, distant, narrow; white, (Smith), arcuate decurrent, distant, (Hansen)
Stem:
about 2cm long and about 0.05cm wide, cylindric, hollow; white; minutely pruinose to subglabrous [almost bald], (Smith), 0.6-2.4cm x 0.025-0.07cm, (Hansen)
Microscopic spores:
spores 8-11 x 3.5-4 microns, (12-14 x 4-5(6) from 2-spored basidia), subfusiform [somewhat spindle-shaped], smooth, iodine reaction not determined; pleurocystidia not observed, cheilocystidia not observed, (Smith), spores 7.5-12 x 2.5-4.5 microns, oblong to subcylindric; basidia usually 4-spored; pleurocystidia absent, cheilocystidia scattered, indistinct; pileocystidia 8-23 x 2-3.5 microns, thin-walled; caulocystidia subcylindric, thin- or thick-walled, to 70 microns long at base of stem, (Hansen)
Spore deposit:
[presumably white]
Notes:
Hemimycena subimmaculata is known from a Seattle WA 1911 collection, but also included for Denmark by Hansen, L.(2). There is a BC collection by O. Ceska at the University of British Columbia (as Hemimycena subimmacullata). There are also a number of collections by O. Ceska labeled Mycena albissima from BC (the synonymy follows Redhead).
EDIBILITY
Habitat and Range
SIMILAR SPECIES
Hemimycena albicolor has slightly narrower spores according to Redhead(15) (8.5-12 x 2-3 microns). Hemimycena albissima has abundant cheilocystidia according to Smith(1), but Redhead(15) counts H. albissima as a synonym.Habitat
cespitose [in tufts] on dead wood in woods near Seattle, (Smith), on plant debris, summer to fall, (Hansen)
Status Information
Synonyms
Synonyms and Alternate Names:
Helotium subimmaculatum (Murrill) Redhead