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Page number:266 
Remarks (public):Phlebia tremellosus, also known as Merulius tremellosus Schrad.: Fr., is associated with a white rot (Ginns 1976) of angiospermous and gymnospermous logs and slash. It occurs throughout Canada (Conners 1967; Ginns 1974, 1986a) and the U. S. A. except the southwestern corner (Burt 1917b; Shaw 1973; Ginns 1974). It has been isolated from decayed wood of living oaks (Berry & Lombard 1978) and utility poles (Eslyn 1970). The pink to red color reaction with 2% KOH and the raised, soft woolly mats are valuable characters for differentiating P. tremellosus from related species in culture (Table 13).  
Description type:Culture description 
Description:PHLEBIA TREMELLOSUS (Schrad.: Fr.) Nakas. & Burds.
Mats around inocula Pale Ochraceous-Salmon, thin, slightly raised, subtomentose or short-woolly, then becoming white, thinner, appressed, and silky toward margins at 2 wk, by 6 wk mycelia on inocula darkening to Wood Brown, otherwise mats white to Pale Ochraceous-Salmon or Vinaceous-Buff, most isolates slightly raised to raised, soft, and woolly, some isolates appressed and felty, while others appressed, thin, and subfelty, in cultures pigmented areas changing to pink or red in 2% KOH; margins even, appressed; no odor at 2 and 6 wk; agar bleached at 2 and 6 wk; sometimes fruiting by 6 wk. ; GAA mats at 2 wk white, appressed to slightly raised, thin, subfelty to woolly, often developing a loose network of interconnecting hyphal strands. TAA mats at 2 wk white to Light Buff or Pale Ochraceous Salmon, moderately thick, raised, downy-woolly, then gradually becoming thinner toward margins.
MEA (32-)46-77(-90+); 90+; TAA ++++, 25-33; 52-68; GAA ++, 50-85; +++, 90-90+; TyA yellow, 80-90+; yellow to orange, 90+
Microscopic characters: Marginal hyphae 3-5 µm diam, thin walled, becoming thick walled in age, simple septate, sparsely to moderately branched. Submerged hyphae 2.5-6 µm diam, thin walled, becoming slightly thick walled in age, nodose septate, moderately branched. Surface hyphae similar to those of submerged mycelia except often becoming thick walled or rough walled by 6 wk, sometimes with swellings up to 10 µm diam. Aerial hyphae 1.5-6 µm diam, thin walled to slightly thick walled, occasionally rough walled, nodose septate, moderately branched, often encrusted with numerous, irregularly shaped, yellow crystals, some hyphae containing opaque, refractive, yellow materials. Chlamydospores globose to limoniform, 10-18 x 7-14(-18) µm, thin walled at first, becoming slightly thick walled, terminal or intercalary, numerous in aerial and scattered in submerged mats at 2 wk. Sexuality: Bipolar (Ginns 1967, p. 156; Tassinari 1956, p. 2662).
Cultural descriptions: Bagchee et al. (1954, p. 27); Boidin (1958a, p. 176); Davidson & al. (1942, p. 25); Ginns (1976, p. 155); Sen (1973, p. 293); Singh et al. (1961, p. 1846, sporophore culture); Stalpers (1978, p.52); Wang (1965, p. 34).
Species codes: 2. 4. 7. (26). (27). 31e. 34. 36. (37). 40. 42. (48).54.55.59. 2. 4. 21. 26. 34. 36. 38. 41.54.55.59. (Ginns 1976, p. 155).

 
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