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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), up to 0.7cm across, "turquoise to greenish or olivaceous", (Trudell)
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)
Similar Species
Chlorociboria aeruginascens has a stem that is usually off-center (infrequently central), whereas the stem of Chlorociboria aeruginosa is usually central (rarely off-center); C. aeruginascens often has several fruitbodies arising from each darkly pigmented irregularly shaped fundament or "stromatic mass", whereas C. aeruginosa arises singly from a scarcely differentiated stromatic mass; spores of C. aeruginosa are (8)9-14(15) x 2-4 microns, asci are (57)68-80(95) x (4)5-7(7.5) microns and ectal excipulum gives rise "to few to numerous, straight or coiled, strongly granularly roughened tomentum hyphae", (Dixon, who also describes interior stem flesh as orange yellow in C. aeruginosa and bluish aeruginous in C. aeruginascens). C. aeruginosa has smaller fruitbodies (less than 0.5cm across as opposed to up to 0.7cm) that usually arise singly as opposed to several arising from a common base, yellow-orange flesh instead of the same color as the exterior, and larger spores, (Trudell).
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