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Species Information
Summary: Features include 1) thin, long, broadly spread out, tightly attached fruitbodies that are resupinate on a variety of species of trees and other plants, 2) cream color (in the herbarium), with the surface even and bald, and the margin thinning out, 3) relatively large spores and basidia, 4) cystidia protruding from the spore-bearing surface, unencrusted, and 5) an encrusted subhymenial zone, formed of numerous encrusted bodies side by side.
Hyphoderma amoenum has been found in BC, ID, AL, AZ, CO, GA, MO, VT, and WY, (Ginns).
Fruiting body: long and broadly effused [spread out], thin, adnate [tightly attached], somewhat waxy, "small pieces separable when moistened", probably large, because pieces broken off one end are 5-6cm x 1.5-2cm; cream-color in the herbarium; even, bald; margin thinning out, (Burt)
Microscopic: SPORES 12-15 x 4-6 microns, copious, smooth, colorless; BASIDIA 4-spored, 25-30 x 5-6 microns, rather large; CYSTIDIA 7-9 microns wide, protruding up to 45 microns, not encrusted, no gloeocystidia; in section, fruitbody 120 microns thick, not colored, with the hyphae near the substrate 3 microns wide, compactly interwoven; "an incrusted subhymenial zone present, formed of numerous incrusted bodies side by side", (Burt)
Habitat / Range
on "badly decayed wood; small dead limbs; bark of fallen limbs; associated with a white rot"; on Agave parryi (Parry''s Agave), Alnus sp. (alder), Arbutus menziesii (Pacific Madrone), Garrya wrightii (Wright''s silktassel), Holodiscus discolor (Ocean Spray), Picea sp. (pine), Pinus contorta (Lodgepole Pine), Prosopis juliflora (Mesquite), Prunus serotina subsp. virens (Southwestern Black Cherry), Quercus arizonica (Arizona White Oak), Q. garryana (Oregon White Oak), Q. hypoleucoides (Silverleaf Oak), Q. oblongifolia (Mexican Blue Oak), Sageretia wrightii (Wright''s Mock Buckthorn), Tsuga sp. (hemlock), Vitis sp. (grape), (Ginns), on barkless logs of a pale soft wood, perhaps Populus, (Burt)
