white rot fungi (?), "zwavelschorszwamm (dutch)"

Description:

TRECHISPORA VAGA (Fr.) Liberta Mats white to Baryta Yellow, thin, appressed, and subfelty, inocula often covered with sparse, raised, cottony mycelia at 2 wk, by 6 wk Barium Yellow to Strontian Yellow, occasionally with patches of Yellow Ocher or Antique Brown, thin, raised, and loose cottony throughout, although some isolates also developing dense, raised, woolly patches over inocula, and in other isolates near margins raised, cottony mycelia interspersed with small or large patches of thin, appressed, subfelty mycelia; margins even to slightly uneven, appressed; no odor at 2 and 6 wk; agar unchanged at 2 wk, Ochraceous-BUff to Dresden Brown at 6 wk; not fruiting by 6 wk. GAA mats at 2 wk Strontian Yellow in color. ; TAA mats at 2 wk Napthalene Yellow to Lemon Yellow, thin, appressed and subfelty or raised and cottony-woolly; margins even to bayed. MEA (16-)32-30; (36-)42-68; GAA ++++, tr; TAA ++++, tr(-24); 15-27; TyA -, tr-19; 21-34 Micro characters: Marginal hyphae 2-4 µm diam, thin walled, nodose septate, some clamps ampullate, sparsely to moderately branched, usually branches arising from or opposite clamps. Submerged hyphae 2-5.5 µm diam, thin walled, nodose septate, moderately branched. Surface and aerial hyphae 1.5-6 ym diam, thin walled, nodose septate with some ampullate clamps, sparsely to moderately branched, some segments heavily encrusted with hyaline crystals, hyphae from pigmented areas coated with a thin layer of resinous materials. Sexuality: Tetrapolar (Boidin & Lanquetin 1984b, p. 233). Cultural descriptions: Boidin (1958a, p. 85 as Corticium sulphureum (Pers: Fr.) Fr.); Stalpers (1978, p. 129). Species code: 2. 3c. (21). 31d. 32. 36. (37). (38). 39. 46-47.54.55. 60. ----( http://www.mycobank.org/MycoTaxo.aspx?Li... )

Habitat:

The genus has a widespread distribution, and contains 46 species ---Trechispora vaga is associated with a white rot (Gilbertson et al. 1974) of angiospermous and gymnospermous logs and slash throughout North America ---Habitat and distribution. Known from all kind of forests and from both deciduous and conifer substrata. The most common species of the genus and widespread in North Europe ----Distribution in Europe: Russia, Turkey, Estonia, France, Germany, Poland, Hungary, Bosnia and Herzegovina, Croatia, Macedonia, Slovenia, Serbia, Belgium, United Kingdom, Slovenia, Belarus, Russia, Portugal, Sweden, Spain, Austria, Italy, Denmark, Norway, Switzerland, Finland, and the Caucasus. Common and widespread species in all European forests.

Notes:

Fruitbody resupinate, effused, often large, smooth, colliculose to grandinioid or comprised of richly branched and anastomosing hyphal threads, often arranged in a fan-like manner, easily detachable, fragile to membranaceous, varying in colour but always with some shade of brown from chamois to deep umber, as fresh usually with more yellowish colours, especially in sterile parts which can be sulphur-yellow, margin abrupt or thinning out and then arachnoid or fibrillose, usually of paler colour, cordons frequently occurring in the fruitbody and extending beyond the margin. Hyphal system monomitic, all hyphae with clamps, thin-walled, subhymenial hyphae and cord-hyphae straight 2-5 µm, often provided with crystals and now and then with slightly ampulliform septa, slightly agglutinated, subhymenial hyphae sinuouse, richly branched and 2-3 µm, hyphae turning vinaceous red in KOH. Basidia subcylindrical to subclavate, sinuouse, pleural, mainly 15-20 x 5-6 µm, with four sterigmata and a basal clamp. Spores subglobose to elliptical, densely verruculose (4.5-)5-5.5(-7) x 4-4.5 µm, nonamyloid --- at one or two of the picture are also the "mollisa cinerea" to see