Chlorociboria aeruginosa: The Ultimate Mushroom Guide
About The Chlorociboria aeruginosa Mushroom
Chlorociboria aeruginascens is an inedible saprobic species of mushroom. It has small, green, saucer-shaped fruit bodies. Although the actual fruit bodies are infrequently seen, the green staining of wood caused by the fungus is more prevalent.
Chlorociboria aeruginosa can easily be confused with its close relative, Chlorociboria aeruginascens. Chlorociboria aeruginosa tends to be a little smaller and has a centrally attached stipe rather than a laterally attached stipe. The only constantly reliable differentiation is the larger spores of Chlorociboria aeruginosa: 9-15 X 1.4-2.8 µm versus 5-8 X 0.7-2.8 µm for Chlorociboria aeruginascens.
Wood infected with Chlorociboria fungi species has long been used in such decorative woodworking as Tunbridge ware. In Italy the practice dates from at least as far back as the 14th century, when it was used in 'intarsia', an inlaying process rather similar to marquetry.
Other names: Green Elfcup, Green Wood Cup, Blue Stain, Green Stain, Blue-Green Wood Stain.
Chlorociboria aeruginosa Identification
Saprobic on well-decayed, barkless logs and sticks, including those of both hardwoods and conifers; evident as green-stained wood year-round, but the fruiting bodies typically appear in summer and fall; widely distributed in North America.
Cup-shaped at first, becoming flattened or disc-shaped; 2-5 mm across; with a tiny stem (1-2 mm long) that may be central or somewhat off-center; upper surface bald, blue-green; undersurface similar.
Odor and Taste
Spores 6-8 x 1-2 µ; subfusiform to nearly cylindric; smooth; biguttulate with a small oil droplet near each end. Paraphyses filiform; 70-80 x 1 µ; apices subacute; hyaline. Terminal cells on excipular surface cylindric; often twisted or contorted; 1-1.5 µ wide; smooth.
Chlorociboria aeruginosa Look-Alikes
Very similar and can only be separated with confidence by microscopic examination of spore dimensions.
Several darker cup-like ascomycetes fungi occur in similar habitats.
Chlorociboria aeruginosa Taxonomy & Etymology
Described in 1822 and given the scientific name Peziza aeruginosa, thus establishing its basionym, this species was transferred to the genus Chlorociboria in 1957 by American mycologists C S Ramamurthi, R P Korf, and L R Batra.
Synonyms of Chlorociboria aeruginosa include Peziza aeruginosa Vahl, Chlorosplenium aeruginosum (Oeder) De Not., and Chlorosplenium discoideum Massee.
Chlorociboria aeruginosa is the type species of the Chlorociboria genus.
The specific epithet aeruginosa comes from the Latin for copper oxidation or verdigris - a blue-green staining was seen on the surface of copper that has become 'rusty' (oxidised).
Chlorociboria aeruginosa profile
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