Summary:
Features include 1) flat growth on wood with the pore surface exposed, 2) soft texture when fresh, 3) a pale yellow pore surface, 4) rhizomorphs that are often present, 5) small nearly round spores, and 6) a monomitic hyphal system. The online Species Fungorum, accessed October 25, 2015, gave the current name as Ceriporiopsis mucida (Pers.) Gilb. & Ryvarden. The description is derived from Gilbertson(1) except where noted.
Porpomyces mucidus has been found in BC, WA, OR, ID, ON, AK, AR, CO, FL, MT, NY, and VA (Gilbertson). It is common in Europe, and circumpolar in distribution (Gilbertson), so presumably also found in Asia.
Cap:
growing flat on wood with pore surface exposed, "separable, soft when fresh, friable when dry", up to 0.3cm thick, annual; margin "wide to narrow, with or without rhizomorphs, white to pale cream"
Flesh:
subiculum about 0.1cm thick; white
Pores:
3-5 per mm when regular angular, but in parts slightly sinuous and irregular, pores thin-walled; cream to pale chrome yellow or straw-colored, (Gilbertson), pore surface cream to pale yellow (Ginns)
Microscopic:
spores 2.5-3.5(4) x 2-2.5 microns, broadly elliptic to nearly round, smooth, inamyloid, colorless; basidia 4-spored, 10-12 x 4-6 microns, clavate; cystidia none; hyphal system monomitic, generative hyphae 2.5-4 microns wide, "with clamps, smooth or with small crystals, especially in the margin and the subiculum"
|
