Antrodiella semisupina (Berk. & M.A. Curtis) Ryvarden
no common name
Steccherinaceae

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

Introduction to the Macrofungi

Photograph

© Bryan Kelly-McArthur     (Photo ID #74703)


Map

E-Flora BC Static Map

Distribution of Antrodiella semisupina
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Species Information

Summary:
Antrodiella semisupina is characterized by its dense semitranslucent texture and small pores and spores. Other features include its thin narrow shingled caps that are white and velvety at first becoming ocher to pale straw-colored, bald, and slightly zonate, its pore surface that is cream to pale straw-colored at first, its mild taste, and growth usually on hardwoods but also on other polypores or conifers. It is common in the east, but rare in the Pacific Northwest, (Gilbertson). The type seems to represent a different species from what is usually called Antrodiella semisupina, (Miettinen(1)).
Odor:
weak (Breitenbach)
Taste:
none, (Gilbertson), mild (Breitenbach)
Microscopic:
spores 2.5-3.5 x 2-3 microns, elliptic, inamyloid, colorless, thin-walled; basidia 4-spored, 11-14 x 4-6 microns, with basal clamp; cystidia absent; hyphal system trimitic: generative hyphae 2-4 microns wide, clamped, often difficult to observe in dried specimens, skeletal hyphae predominant, 2-5 microns wide, agglutinated, straight, unbranched to occasionally branched, colorless, thick-walled, binding hyphae 2-3 microns wide, much branched, thick-walled, colorless, (Gilbertson), spores 2.5-3.5 x 2-2.5 microns, broadly elliptic, smooth, inamyloid, colorless, (Breitenbach)
Spore Deposit:
white (Buczacki)
Notes:
Antrodiella semisupina has been found in BC, OR, ID, NB, NS, PQ, CT, MA, MI, MT, NH, NJ, NY, PA, TN, VA, and VT, (Gilbertson).

Habitat and Range

SIMILAR SPECIES
Antrodiella romellii grows flat on the substrate, occurs on conifers, and has larger spores, (Gilbertson). Postia floriformis has a bitter taste, slightly larger spores, and monomitic hyphal system, (Gilbertson). See also SIMILAR section of Antrodiella canadensis.
Habitat
annual, usually on hardwoods such as Betula, Alnus, Populus and others, rarely on conifers like Abies, Picea, and Pinus, and on fruiting bodies of other polypores like Fomes, Fomitopsis, and Trichaptum; causes a white rot, (Gilbertson), usually in dense clusters, more rarely single, on dead hardwood, according to literature also rarely on conifers, (Breitenbach), summer, fall, winter, (Buczacki)

Synonyms

Synonyms and Alternate Names:
Acetabula vulgaris Fuckel
Paxina acetabulum (L.: Fr.) Kuntze
Polyporus pachycheiles Ellis & Everh.
Polyporus semisupinus Berk. & M.A. Curtis