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Species Information
Summary: Features include 1) resupinate growth on wood, 2) whitish to light gray or light cream fruitbodies forming patches several centimeters wide, 3) spores that are (5.5)6-7.5(8) x 3.5-4.5 microns and inamyloid, 4) basidia (2)4-spored, and 5) monomitic hyphal system with occasional clamp connections on basal hyphae, but no clamp connections on other hyphae. This species is a member of the Athelia epiphylla complex and is included by Eriksson(1973) in a wider concept of that species, but Julich(3) (1972), Julich(5) (1980), and Ginns(5) (1993) maintain it as separate.
Athelia salicum has been found in BC, WA, ID, AB, NS, ON, PQ, AZ, CA, CT, IL, ME, MT, NC, NH, NJ, NY, OH, and WI, (Ginns), and Austria, Czechoslovakia, Denmark, Finland, France, Germany, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom, and the USSR, (Julich).
Fruiting body: forming patches several centimeters wide, closely attached, the subiculum little developed; whitish to light gray or light cream, (Julich(3)), thin, pellicular; whitish to cream, (Julich(5)), spore deposit white (Buczacki)
Microscopic: SPORES (5.5)6-7.5(8) x 3.5-4.5 microns, inamyloid, colorless, thin-walled, with distinct apiculus; BASIDIA mostly 4-spored, rarely 2-spored, 10-16 x 5.5-8 microns, cylindric to clavate; hyphae about 3-8(10) microns wide, the basal hyphae wider than the subhymenial hyphae, thin-walled to somewhat thick-walled (0.2-0.5 microns), occasional clamp connections on basal hyphae, otherwise absent, (Julich(3)), most collections have encrusted hyphae (Eriksson)
Athelia decipiens is similar to some material identified as this species but has no clamp connections, (Eriksson). Athelia epiphylla sensu stricto has narrower spores (Eriksson).
