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Species Information
Summary: Features include 1) resupinate growth on wood, 2) a mould-like, fuligineous fruitbody that is smooth or more rarely granulose or colliculose, the sterile margin darker and fibrillose, and the subiculum darker than the spore-bearing area and fibrous, 3) spores that are round to nearly round, aculeate, and brown, 4) basidia often with transverse septa, the sterigmata often with septa, 5) subhymenial hyphae that are pale brown, wall thickening apparent or thin-walled, with clamp connections, scattered crystalline material adhering to hyphae becoming green in KOH, 6) subicular hyphae that are brown to dark golden brown, wall thickening apparent or thick-walled, with frequent clamp connections, rarely with encrusting material. The online Species Fungorum, accessed August 27, 2020, gives this taxon as a synonym of Tomentella lapida (Pers.) Stalpers [as ''lapidum''], Stud. Mycol. 24: 65 (1984).
T. ramosissima found in BC, WA, ID, AB, NF, ON, PQ, AZ, CO, MN, MI, MS, MT, NC, NH, NM, NY, and SC, (Ginns). Distribution also includes Czechoslovakia, France, Germany, Portugal, Sweden, and Turkey, (Larsen).
Fruiting body: up to 0.05cm thick, adherent to separable, normally mucedinoid [mould-like], spore-bearing area finally continuous; fuligineous; "smooth, more rarely granulose or colliculose"; subiculum fibrous, darker than the spore-bearing area; sterile margin fibrillose, colored as subiculum, (Larsen), spore deposit pale brown (Buczacki)
Microscopic: SPORES 7-8.5(9) microns in diameter, round to nearly round, aculeate, tan to medium brown or dull golden brown; BASIDIA 35-50 x 8-10 microns, 4-spored, clavate, with clamp connection at base, often with transverse septa, sterigmata up to 6 microns long and often with septa; SUBHYMENIAL HYPHAE 4-6 microns wide, pale brown, "wall thickening apparent or thin-walled", with clamp connections, scattered crystalline material adhering to hyphae becoming green in KOH; SUBICULAR HYPHAE (3.5)4-7(10) microns wide, "brown to dark golden brown", "wall thickening apparent or thick-walled", septate, with frequent clamp connections, rarely with encrusting material, (Larsen)
Tomentella neobourdotii has subicular hyphae that are encrusted and mostly less thick-walled, and spores are not observed that are green or bluish green in KOH, (Larsen).
