At 15°C development slower, at 30°C marginal hyphae submoniliform

At 15°C development slower, at 30°C marginal hyphae submoniliform, chlamydospores abundant in aerial hyphae, conidiation scant. On SNA after 72 h 8–12 mm at 15°C, 24–35 mm at 25°C, 19–22 mm at 30°C; mycelium covering the plate after 1 week at 25°C. Colony hyaline, thin, loose; indistinctly broadly, irregularly zonate with margins of individual zones ill-defined see more with irregular outgrowths; hyphae with conspicuous differences in thickness; distal region slightly downy

due to aerial hyphae arising several mm high; surface and aerial hyphae degenerating within a week. Autolytic excretions inconspicuous, frequent at 30°C, coilings common, abundant at 30°C. No pigment, no distinct odour noted. Chlamydospores seen after 3–4 days, abundant, terminal and intercalary, globose to pyriform, often in chains. Conidiation tufts

or pustules appearing after 3–4 days in indistinctly separated concentric rings and close to buy ICG-001 the distal margin, up to 4 mm diam, aggregations to 9 mm long, turning green, 26–27F6–8, after 4–5 days. Structure of tufts or pustules similar to CMD. At 15°C slow development, with tufts confluent to large irregular masses; chlamydospores rare. At 30°C growth more regular, denser, surface hyphae with submoniliform thickenings and often in irregular strands, conidiation macroscopically invisible, scant, on short conidiophores with moniliform terminal branches. Autolytic activity conspicuous, coilings abundant. Chlamydospores conspicuously abundant, intercalary and terminal, (6–)7–13(–21) × many (3–)5–10(–14) μm, l/w = 0.8–2.1(–4.4) (n = 91), variable, subglobose, fusoid, ellipsoidal,

oblong to rectangular, often in chains and sometimes resembling dimorphic ascospores. Habitat: on wood, bark and lignicolous fungi such as species of Stilbohypoxylon or Rosellinia, also endophytic in wood of Theobroma spp. Distribution: uncommon but widespread, Africa (Ghana), Central and South America (Brazil, Costa Rica, Ecuador, Puerto Rico), Europe (Germany, UK). Holotype: Puerto Rico, Caribbean National Forest, El Yunque Recreation Area, trail from Palo Colorado, elev. 700–800 m, on palm leaf midribs with Stilbohypoxylon moelleri, 22 Feb. 1996, G.J.S. 8076 (BPI 744463; holotype of T. stilbohypoxyli BPI 744463B; ex-type culture G.J.S. 96-30 = ATCC MYA 2970 = CBS 992.97 = DAOM 231834; not seen). Specimens examined: Germany, Rheinland-Pfalz, Eifel, Landkreis Daun, Gerolstein, Eifel, forest path shortly after Mürlenbach, left off the road heading north, 50° 09′ 32″ N, 06° 36′ 36″ E, elev. 380 m, on partly decorticated branch of Carpinus betulus 8 cm thick on moist bare ground, on wood, soc. Hypoxylon howeianum, Mollisia sp., holomorph, 20 Sep. 2004, H. Voglmayr & W. Jaklitsch, W.J. 2736 (WU 29478, culture CBS 119501 = C.P.K. 1979). United Kingdom, Essex, Loughton, Epping Forest, Strawberry Hill Ponds, MTB 43-34/1, 51° 38′ 58″ N, 00° 02′ 22″ E, elev.

Comments are closed.