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

Chlorociboria aeruginascens (Nyl.) Kanouse ex C.S. Ramamurthi, Korf & L.R. Batra
green stain
Helotiaceae

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

Introduction to the Macrofungi

© Jim Riley  Email the photographer   (Photo ID #73181)

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Distribution of Chlorociboria aeruginascens
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Species Information

Summary:
Features include a blue-green fruitbody on wood with off-center (infrequently central) stem and microscopic characters including smooth tomentum hyphae. (Its close relative C. aeruginosa has central to slightly off-center stem, larger spores and granularly roughened tomentum hyphae.) Blue-green staining of wood is more commonly seen than the fruitbodies. Collections were examined from BC, WA, OR, ID, and also ON, PQ, AK, CA, CO, GA, IA, ME, MA, MI, MN, NC, NH, NJ, NY, OH, TN, VT, WI, Cuba, Greenland, Venezuela, Bulgaria, Czechoslovakia, Denmark, Finland, Netherlands, Sweden, Ukraine, United Kingdom, Armenia, China, Georgia, India, Japan, Philippines, and Russia, (Dixon). B. Callan has determined collections from BC of both Chlorociboria aeruginosa and C. aeruginascens deposited at the Pacific Forestry Centre.
Upper surface:
less than 0.7cm across, cup-shaped to spathulate when young, becoming expanded - funnel-shaped when fully mature; color varying from light orange-yellow to colored as exterior (underside) to whitish-pale-green, on drying becoming slightly darker, (Dixon),
Flesh:
thin (Lincoff), on breaking, stem showing cortex and interior both colored as exterior, (Dixon), same color as exterior (underside) (Trudell)
Underside:
bluish-aeruginous; bald or finely tomentose, lower part furrowed and rugose especially on drying, (Dixon)
Stem:
less than 0.6cm long and 0.1-0.15cm thick, off-center to infrequently central; colored as exterior; frequently with several fruitbodies arising from a darkly pigmented and irregularly shaped fundament or "stromatic mass", (Dixon), fruitbodies often arising from a common base (Trudell)
Odor:
none (Miller)
Taste:
unknown (Miller)
Microscopic:
spores 5-7(10) x 1.0-1.5(2.4) microns (average 6 x 1.5 microns), fusiform to elliptic-fusiform, smooth, colorless or with light green contents with bipolar droplets, unicellular, irregularly biseriate; asci 8-spored, (40)50-65(75) x 3-4(5) microns; paraphyses scarcely extending beyond asci, (1)1.5(2) microns wide, filiform [thread-like], colorless, septate, blunt at tip, branching near base; ectal excipulum gives rise "to few to numerous, coiled or sometimes straight, smooth-walled tomentum hyphae", tomentum hyphae 1.0-1.5(2) microns wide, (Dixon), spores 5-8 x 1-2 microns (Trudell)

Habitat / Range

single to gregarious on barkless and decayed wood; spring, summer, and fall, (Dixon), on rotting logs and barkless wood, especially oak, (Lincoff)

Synonyms and Alternate Names

Chlorosplenium aeruginascens (Nyl.) P. Karst.

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

Species References

Dixon(1), Trudell(4)*, Dennis(1) (as Chlorosplenium aeruginascens), Seaver(2) (as Chlorociboria aeruginosa (Oed.) Seaver, for which he gives as synonyms the names used above), Phillips(1)*, Lincoff(2)*, Miller(14)* (as Chlorosplenium aeruginascens), Arora

References for the fungi

General References