Summary:
Features include 1) resupinate growth on conifer wood, 2) a soft, white, membranous-pelliculose fruitbody, the margin not especially differentiated, 3) spores that are elongated, smooth, and inamyloid, 4) 4-spored basidia, 5) cystidia that are cylindric or narrowly obclavate, and 6) a subiculum of thin hyphae with clamp connections, the walls usually heavily encrusted with crystals.
Athelia munda has been found in BC, AZ, CA, CO, NJ, and WY, (Ginns).
Fruiting body:
extensive, irregularly effused over the substrate, soft membranous-pelliculose; white; "margin gradually thinning out, not especially differentiated"; subiculum loose, (Jackson)
Microscopic:
SPORES 3-4 x 1.5-2 microns, smooth, inamyloid, thin-walled; BASIDIA 4-spored, 6-8 x 3-4 microns, cylindric to subclavate, developed from SUBHYMENIAL HYPHAE in cymose clusters through progressive proliferation from clamp connections, sterigmata upright, slender, slightly arcuate; CYSTIDIA 25-45 x 2.5-3.5 microns, extending two thirds of their length beyond the hymenium, cylindric or narrowly obclavate, somewhat flexuous [wavy], thin-walled, unencrusted; SUBICULUM made up of hyphae 1-2 microns wide, fine, horizontal or irregularly interwoven, thin-walled, with clamp connections, walls usually heavily encrusted with crystals, (Jackson)
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