Search on : Taxa descriptions

 


 
 Add this item to the list  HYPHODERMA PUBERUM (Fr.) Wallr..
   
Literature:
 
Page number:160 
Remarks (internal):Hyphoderma puberum is associated with a white rot (Lindsey & Gilbertson 1978; Ginns 1986a). This species is quite common on angiospermous and gymnospermous logs and slash throughout North America (Burt 1925; Conners 1967; Shaw 1973; Gilbertson & al. 1974, 1975; Gilbertson & Lombard 1976; Ginns 1986a). Zabel & al. (1985) have isolated H. puberum from treated utility poles. Although lacking in basidiomata, cultures of H. puberum produce many stephanocysts. The development of cystidia, stephanocysts, and occasional malocysts in culture distinguishes H. puberum from similar species (Table 8); see discussion under H. praetermissum also.  
Description type:Culture description 
Description:HYPHODERMA PUBERUM (Fr.) Wallr..
Mats white, around inocula thin, appressed to slightly raised, subfelty to downy, then becoming thinner, slightly raised to raised, arachnoid to downy-cottony toward margins at 2 wk, by 6 wk white to Light Buff, thin to moderately thin, some isolates around inocula appressed and subfelty or raised and woolly, then becoming slightly raised to raised, downy-cottony or woolly toward margins, but other isolates appressed to slightly raised,
subfelty to downy throughout; margins even, appressed to slightly raised; no odor or agar discoloration at 2 and 6 wk; not fruiting by 6 wk.
MEA 19-35; (55-)63-83; GAA ++++ to. 0-tr ; TAA ++++, tr-13; tr-38; TyA -, brown or tr-22; (tr-)35-50
Microscopic characters: Marginal hyphae 6-8 µm diam, thin walled, nodose septate, sparsely branched, usually branches arising about 10-35 µm below clamps, 2.5-4.5 µm diam. Submerged hyphae 1.5-8-µm diam, thin walled to slightly thick walled, nodose septate, moderately branched; swellings up to 25 µm diam, scattered at 2 and 6 wk, occasionally in chains (allocysts) at 6 wk. Surface and aerial hyphae similar to submerged hyphae except lightly to moderately encrusted with coarse, hyaline crystals. Cystidia spathulate, 40-60 µm long, 4-6 µm diam at apex, thin walled, clamped at base, terminal, often capped with a yellow, resinous globule, absent or scattered at 2 and 6 wk. Stephanocysts (Fig. 38a) one celled, hemispherical, 3-4.5 ?m in height, 7-9 µm diam, thin walled, with a basal clamp, terminal, usually with a basal ring of small, hyaline, nonstaining spines but sometimes spines scattered over entire structure, rare to abundant on inflated cells in surface and submerged mats at 2 and 6 wk. Malocysts (Fig. 38b) lacrimoid to pyriform, 8-13 x 5-6.5 µm, thin walled, with a basal clamp, terminal, absent or numerous in aerial mats at 2 and 6 wk. Strands up to 18 µm diam, absent or scattered at 6 wk, composed of one or two main hyphae, 5-7 µm diam, entwined by narrower hyphae, these 1-2 µm diam, thin walled, nodose septate, frequently branched.
Sexuality: Bipolar (Biggs 1938, p. 65).
Cultural descriptions: Boidin (1958a, p. 141); Eslyn & Nakasone (1984, p. 222); Stalpers (1978, p. lll).
Species code: 2. 3c. (13). 26. 30. (31a). 32. 36. 38. 44-46.54.55.59.
 
Taxon name: