Sistotrema muscicola (Pers.) S. Lundell

Basidiocarps poroid, yellowish; resupinate, effused in small patches; fragile, loosely attached to substrate; margin white cottony to fimbriate.

Hymenophore surface poroid or hydnaceous, 2-4 pores per mm; disseptiments splitting to form spines.

Subiculum very thin, white, soft, cottony to arachnoid.Basidiocarps poroid, yellowish; resupinate, effused in small patches; fragile, loosely attached to substrate; margin white cottony to fimbriate.

Subiculum very thin, white, soft, cottony to arachnoid.

Basidiospores subglobose to ellipsoid or broadly ovate, smooth, hyaline, Melzer negative, 3.5-5.5 × 2.5-3.5 µm.

Basidia urniform, mostly 6-sterigmate, with basal clamp, 15-25 × 4-8 µm.

Hyphal system monomitic; subicular hyphae with conspicuous clamps, hyaline, thin-walled ^[61] (in my specimen rather thick walled), some ampulate, commonly lightly encrusted with coarse crystals; 2-5 µm thick.

Cystidia absent.Basidiospores subglobose to ellipsoid or broadly ovate, smooth, hyaline, Melzer negative, 3.5-5.5 × 2.5-3.5 µm.

Hyphal system monomitic; subicular hyphae with conspicuous clamps, hyaline, thin-walled ^[61] (in my specimen rather thick walled), some ampulate, commonly lightly encrusted with coarse crystals; 2-5 µm thick.

Cause white root of dead conifers and hardwoods.Cause white root of dead conifers and hardwoods.

Rare. On dead wood of conifers and hardwoods, also among mosses and leaf litter on the soil surface.Rare. On dead wood of conifers and hardwoods, also among mosses and leaf litter on the soil surface.