Baeospora myosura: The Ultimate Mushroom Guide
About The Baeospora myosura Mushroom
Baeospora myosura is a species of fungus that produces mushrooms with long, coarse hairs. It grows on plant material and manure. It is white to cream and the spore color is white, cream, or yellowish. It is commonly found in North America and Europe. It is regarded as nonpoisonous and has no culinary value.
Despite its species epithet (Latin for white cap), the cap color usually is some shade of medium to dark brown.
It is often confused with Strobilurus trullisatus, also common on Douglas fir and Sitka spruce cones, but the latter has a whitish, striate cap, close, not crowded gills, and a stipe that is pallid at the apex, shading to a yellowish to tawny-brown base.
Other names: Conifer-Cone Baeospora, Conifercone Cap, Conifer Conecap, Spruce-Cone Mushroom.
Baeospora myosura Identification
Saprobic; decomposing the fallen cones of spruces and pines (especially those of Norway spruce, eastern white pine, Douglas-fir, and Sitka spruce); growing alone or gregariously; fall; widely distributed in North America.
1-3 cm across; convex, becoming broadly convex or flat; dry or slightly moist; bald or very slightly silky; light brown, fading markedly to buff from the margin inward; the margin not lined, or very faintly lined at maturity.
Narrowly attached to the stem or nearly free from it; crowded; whitish; sometimes developing brownish spots.
1.5-5 cm long and 1-2 mm thick; equal; finely powdery or hairy; whitish to brownish; base attached to conspicuous rhizomorphs.
Odor and Taste
KOH negative or faintly olive on cap surface.
Spores 3-4.5 x 1.5-2 µ; elliptical to nearly cylindric; smooth; amyloid. Pleuro- and cheilocystidia clavate to fusiform; up to 40 µ long and 10 µ wide; pleurocystidia rare; cheilocystidia abundant. Pileipellis a thin cutis of clamped cylindric elements 4-14 µ wide above a subcellular subcutis.
The habitat (conifer cones) and tiny spores make it difficult to confuse this little mushroom with any others - but microscopically studying the spores is crucial because other cone-rotting species occur - for example, Strobilurus esculentus, which is macroscopically similar to Baeospora myosura but has much larger spores.
Baeospora myosura Taxonomy & Etymology
This mushroom was described in 1818 by Elias Magnus Fries, who established its basionym when he gave it the scientific name Agaricus myosura. The currently-accepted scientific name Baeospora myosura was established in 1938 by American mycologist Rolf Singer.
Synonyms of Baeospora myosura include Agaricus myosurus, Collybia myosura, Marasmius myosurus (Fr.) P. Karst., Collybia friesii, Marasmius friesii (Bres.) Rea.
The genus name Baeospora comes from the Greek word Baeo, meaning 'little' with the suffix -spora, meaning a spore. The spores of mushrooms in this genus are very tiny indeed.
The specific epithet myosura is from Latin and means 'mouse tail' and is a reference to the curved form of most stems of the Conifercone Cap mushroom.
Baeospora myosura profile
Help Improve Ultimate Mushroom
If you find an error or you want to add more information about the mushroom please click here.