Name: Gyroporus purpurinus
Author: Snell ex Singer
Citation: Farlowia 2(2): 236 (1946)
Preferred Synonyms:Gyroporus purpurinus Singer ex Davoodian & Halling
Cap: 1.5-5 cm; convex, becoming broadly convex or nearly flat in age; dry; bald or slightly velvety; sometimes becoming somewhat wrinkled, or slightly cracked in age (like me, according to my friends); purplish red to purplish pink.
Pore Surface: Whitish at first, becoming pale yellow; not bruising, or bruising slowly brownish; 1-2 circular to angular pores per mm; tubes to 5 mm deep.
Stem: 3-5 cm long; 0.5-1 cm thick; more or less equal; dry; brittle; hollowing; colored like the cap; not bruising; not reticulate; basal mycelium white.
Flesh: White; not staining on exposure.
Odor and Taste: Not distinctive.
Chemical Reactions: Ammonia negative on cap surface and flesh. KOH negative on cap surface; negative to yellowish on flesh. Iron salts negative on cap surface and flesh.
Spore Print: Yellow.
Microscopic Features: Spores 8-10 × 5-6 µ; smooth; ellipsoid; hyaline in KOH. Hymenial cystidia fusoid-ventricose; hyaline in KOH; to about 50 × 10 µ. Pileipellis a trichoderm with fusiform terminal elements 5-20 µ wide.