Details about map content are available here Click on the map dots to view record details.
Species Information
Summary: Features include flat annual growth on conifer wood, soft cottony consistency, small pores that are angular and white to cream, margin white and wide, sometimes with rhizomorphs, and microscopic characters. The name Antrodia gossypina is used commonly but is incorrect. The basionym was Poria gossypium Speg., using the noun ''gossypium'' - ''cotton''. Because this epithet is a noun, it does not change its gender to agree with the genus. Thus Fibroporia gossypia (as used by Parmasto) is not a correct combination. The adjective ''gossypina'' would be a permissible species epithet meaning ''pertaining to cotton'' or ''cottony'', an adjective which would agree with the gender of the genus. But that was not the name originally applied to the species by Spegazzini. (Dai(2)). The description derived from Gilbertson(1).
Antrodia gossypium is known in BC from three collections, (Ginns), and has been found in ON, AZ, CO, NY, PA, (Gilbertson).
Cap: flat on wood with pore surface exposed, often widely spread out, up to 0.5cm thick, separable, soft to cottony; margin wide, white; rhizomorphs absent or present
Flesh: "white and cottony and especially in old specimens contrasting with the darker tubes"
Pores: 3-6 per millimeter, angular, white to cream, when old or dry straw to cream; tubes the same color, "rather waxy brittle when dry and in part soaked by some resinous substance in old fruitbodies", up to 0.3cm deep
Taste: not distinct
Microscopic: spores 4.5-6 x 2.5 microns, elliptic, IKI-, thin-walled, often with small oily inclusions; basidia 4-spored, 15-20 x 4-5 microns, clavate; cystidia or other sterile elements absent; hyphal system dimitic, generative hyphae 3-6 microns wide, thin-walled, clamped, predominant in trama, skeletal hyphae scattered in trama, more common in context, 3-5 microns wide, straight, thick-walled to solid, inamyloid, colorless
Spore Deposit: white (Buczacki)
Habitat / Range
annual, on conifer wood; causing a brown rot, (Gilbertson), on dead and rotting conifer wood, perhaps all year but mainly fall, (Buczacki)
Similar Species
Fibroporia vaillantii is similar when rhizomorphs are present, but F. vaillantii has larger and wider spores, (Gilbertson). F. vaillantii is similar, but it is much softer and has spores 3-4 microns wide, (Ginns).
