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Species Information
Summary: Features include 1) resupinate growth on decayed wood, 2) a spore-bearing layer that is thin, loose, easily separable, the color whitish with a yellowish or bluish green tint, the subiculum inconspicuous or virtually lacking, 3) spores that are small, narrowly elliptic to cylindric, smooth, and inamyloid, 4) small basidia, 5) a monomitic hyphal system, with narrow hyphae.
Leptosporomyces galzinii has been found in BC, WA, ID, AB, MB, NT, ON, PQ, AZ, CA, CO, CT, LA, MD, ME, MT, NH, NJ, NM, and NY, (Ginns), as well as Austria, Czechoslovakia, France, Poland, Sweden, Turkey, and the USSR, (Julich).
Fruiting body: "resupinate, effuse, mostly small, thin and loose, detachable in small pieces", soft; "whitish with a yellowish or greenish (glaucous) tint"; smooth, under a lens finely porulose (especially when dried); margin indeterminate [not distinct], "no real rhizomorphs but accidentally parallel hyphae may form very thin threads", (Eriksson), "resupinate, becoming widely effused, very thin, fragile", easily separated from substrate, spore-bearing layer "loosely pelliculose or finely tomentose, interrupted", white to grayish or slightly bluish white; subiculum inconspicuous or virtually lacking, (Gilbertson), spore deposit white (Buczacki)
Microscopic: SPORES 3-4 x 1.5-2 microns, narrowly elliptic or subcylindric, smooth, inamyloid, not or only weakly cyanophilic, thin-walled; BASIDIA 8-12 x 3-4 microns, subclavate, with basal clamp connection, normally 4-spored; CYSTIDIA none; HYPHAE monomitic, 2-3 microns wide, thin-walled in subhymenium, with thin or slightly thickened walls in subiculum, the subiculum with "a loose, cobwebby texture of mostly straight, sparsely branched hyphae", clamp connections at all septa, branching from or close to septa, (Eriksson), SPORES 4-4.5 x 2 microns, cylindric to oblong, smooth, inamyloid, colorless, with a small apiculus; BASIDIA 9-12 x 3.5-4 microns, in candelabrums, cylindric to clavate, mostly 4-spored but a few 2-spored, with basal clamp connection; CYSTIDIA none; HYPHAE monomitic, 2-4 microns, colorless, thin-walled, with clamp connections, with frequent branching, often branching from a clamp connection, (Gilbertson)
Habitat / Range
on decayed conifer wood, rarely on hardwood, (Eriksson); primarily on decaying wood and bark; Abies (fir), Alnus (alder), Betula (birch), Picea (spruce), Pinus (pine), Pseudotsuga (Douglas-fir), Quercus (oak), Tsuga (hemlock), Heterobasidion annosum (polypore), associated with a white rot, (Ginns), fall, winter, spring; also on bracken debris, (Buczacki)
Similar Species
Leptosporomyces fuscostratus and Leptosporomyces montanus have some hyphae in the subiculum 2.5-5 microns wide with thickened, pale brown walls; L. montanus also has larger spores and basidia, (Ginns(23)). Leptosporomyces septentrionalis has oval spores (slightly wider at base) that measure 5-6 x 1.5-2 microns, (Ginns(23)). Leptosporomyces mutabilis has spores that measure 3.5-5.5 x 1.8-2.8 microns, slightly larger basidia, and slightly wider hyphae, (Ginns(23)).
