Antrodia xantha (Fr.) Ryvarden
no common name
Fomitopsidaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Fomitopsidaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Species Information
Summary:
A good field character is the lemon-yellow pore surface that characteristically cracks into square pieces 0.5-1.5cm long and wide. Other features include flat growth on wood with the pore surface exposed, a bitter taste, allantoid spores, and a weak amyloid reaction of the skeletal hyphae. The description is derived from Gilbertson(1) except where noted.
Taste:
bitter
Microscopic:
spores 4-5 x 1-1.5 microns, allantoid [curved sausage-shaped], thin-walled, inamyloid, colorless; basidia 4-spored, 10-15 x 4-5 microns, clavate; cystidia none, but "pointed, non-projecting cystidioles occur scattered among the basidia, 10-14 x 3-4 microns"; hyphal system dimitic, generative hyphae 2-4 microns wide, thin-walled, with clamp connections, skeletal hyphae predominant, 3-6 microns wide, "semisolid, straight to slightly sinuous, unbranched to occasionally dichotomously branched", "weakly amyloid, but reaction variable and most easily seen in hyphal masses and in fresh condition"
Spore Deposit:
white (Buczacki)
Notes:
Antrodia xantha has been found in BC, WA, OR, ID, AB, NF, NS, ON, SK, YT, AK, AZ, CA, CO, FL, MI, MN, MS, MT, NC, ND, NH, NJ, NM, NY, PA, SC, SD, TN, UT, VA, WI, WV, and WY, and circumglobally in the conifer zone (Europe, Asia), (Gilbertson).
Habitat and Range
SIMILAR SPECIES
Antrodia alpina has larger pores 2-4 per mm, and is reddish with KOH, (Gilbertson). Fibroporia radiculosa has larger elliptic spores. Diplomitoporus rimosus is distinguished by its host preference for live and dead juniper, "association with a white rot, tubular cystidia, and lack of amyloid walls in the skeletal hyphae", (Ginns(28)). See also SIMILAR section of Sidera lenis.Habitat
annual, usually on conifers, often in open and dry localities and commonly on wood without bark, more rarely on hardwoods, especially on Salix (willow) species, causes a brown cubical rot, (Gilbertson), probably all year (Buczacki)
Status Information
Synonyms
Synonyms and Alternate Names:
Polyporus sulphurellus Peck
Polyporus xanthus Fr.
Sutorius luridiformis (Rostk.) G. Wu & Zhu L.