E-Flora BC: Electronic Atlas of the Flora of British Columbia

Hygrophorus megasporus A.H. Sm. & Hesler
no common name
Hygrophoraceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi
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Distribution of Hygrophorus megasporus
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Species Information

Summary:
features include slimy, dark olive-gray-brown cap, white gills, long slender slimy white stem, and large spores; description derived from Hesler(1) except where noted; Hesler(1) examined collections from WA, OR, CA; there is a collection from BC at the University of British Columbia
Cap:
2-5cm across, at first broadly bell-shaped with mammillate umbo and incurved margin, becoming flat; 'surface beneath "buffy olive" with the umbo "clove brown," margin slightly paler'; glutinous from colorless veil, bald, "the surface often uneven from the drying gluten", margin membranous, (Hesler), dark olive-gray-brown, becoming paler at the margin, (Stuntz)
Flesh:
thin; white, unchanging; in stem white
Gills:
adnate with a tooth becoming subdecurrent, close to subdistant, 0.3-0.4cm broad, thickish, waxy, a few forked; pure white
Stem:
(4)5-10cm x 0.3-0.6(0.8)cm, equal or slight ventricose [wider in middle] and narrowed at base; whitish, when old tinted like cap from the drying veil; covered at first with the colorless glutinous sheath, (Hesler), lacking a sheath of fibrils beneath the slime sheath (Stuntz)
Veil:
colorless glutinous veil on cap and lower stem
Microscopic spores:
spores (10)12-18(20) x 7-9 microns, elliptic, smooth, inamyloid; basidia 4-spored, 55-71 x 7-12 microns; pleurocystidia and cheilocystidia absent; gill tissue divergent; clamp connections present on cuticular hyphae
Spore deposit:
[presumably white]

Habitat / Range

scattered to single or rarely subcespitose [nearly tufted] on humus or mossy areas, in dense coniferous forests

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

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Species References

Hesler(1)*, Stuntz(4)

References for the fungi

General References