Trichaptum biforme (Fr. in Klotzsch) Ryvarden
violet toothed polypore
Uncertain
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
violet toothed polypore
Uncertain
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Species Information
Summary:
Features include 1) thin tough bracket-like fruitbodies that are gray to buff, hairy to bald, and zoned, 2) a purplish pore surface that fades to ochraceous and quickly becomes tooth-like, and 3) growth on hardwoods.
Microscopic:
spores 6-8 x 2-2.5 microns, cylindric, slightly curved, smooth, inamyloid, colorless; basidia 4-spored, 12-22 x 4-5.5 microns, clavate, with basal clamp; cystidia abundant, "20-35 x 3-5 microns and projecting to 20 microns", fusoid, slightly thick-walled, apically incrusted, with basal clamp; "thick-walled, clavate, sterile elements infrequent in hymenial layer"; hyphae dimitic, generative hyphae of context 2.5-6 microns wide, "thin-walled, with clamps, occasionally branched", skeletal hyphae of context 3-6 microns wide, "thick-walled, nonseptate, rarely branched"; hyphae of trama similar, (Gilbertson), spores 5-6.5 x 2-2.5 microns, cylindric, smooth, (Phillips)
Spore Deposit:
white (Phillips)
Notes:
Trichaptum biforme has been found in BC, WA, OR, ID, AB, MB, NB, NS, ON, PE, PQ, SK, AK, AL, AR, AZ, CA, CO, CT, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NH, NJ, NM, NV, NY, OH, OK, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, WY, and circumglobally, (Gilbertson).
EDIBILITY
no (Phillips)
Habitat and Range
SIMILAR SPECIES
Trichaptum abietinum grows on conifers, tends to be thicker and dimidiate rather than petaloid, has a gray hairy upper surface, retains the purplish color of the pore surface longer, and less quickly becomes tooth-like, (Gilbertson). Trichaptum subchartaceum is larger with thick flesh and persistent pores, and grows only on cottonwood and aspen, (Gilbertson). See also SIMILAR section of Trichaptum laricinum.Habitat
annual, single or imbricate [shingled], on dead hardwoods of many genera, rarely on conifers, associated with white pocket rot of sapwood of dead hardwoods, the wood becoming "lacy and fragile with small empty pockets", (Gilbertson), "numerous, single, or overlapping caps on dead stumps" of hardwood trees, reducing them to sawdust, (Phillips), fruiting from late spring to fall (Miller)
Status Information
Synonyms
Synonyms and Alternate Names:
Polyporus biformis Fr. in Klotzsch
Polyporus pergamenus Fr.