No diffusing pigment, no distinct odour noted. Chlamydospores (5–)7–13(–19) × (6–)7–12(–15) μm, l/w 0.9–1.3(–1.6) (n = 32), noted after 4 days at 25°C, becoming extremely abundant (also
at 15°C) on the entire plate, globose, oval or ellipsoidal to angular in thick hyphae, terminal and intercalary. MEK activity conidiation unreliable, noted after 2–4 weeks. Effuse conidiation seen as scant minute heads on aerial hyphae, appearing warted under low magnification, in distal areas of the colony. Conidiation dense in few irregularly disposed, compact, white pustules 1–4 mm diam; with short straight to slightly sinuous elongations bearing minute droplets. Conidia formed in minute dry heads of 10–15 μm. Sometimes few light brownish stromata 0.4–1.3 mm diam appearing close to
the distal margin, surrounded by moniliform hyphae. Habitat: on well-rotted, soft wood of deciduous trees and shrubs, often emerging from underneath loosely ICG-001 supplier attached bark R788 manufacturer or from cracks in the wood. Distribution: Europe (Austria, Germany). Holotype: Germany, Baden-Württemberg, Freiburg, Landkreis Breisgau-Hochschwarzwald, shortly before Breisach heading north, in the riverine forest at the river Rhine, MTB 7911/4, 48°00′10″ N, 07°36′55″ E, elev. 190 m, on 2 partly decorticated branches of Fraxinus excelsior 3–4 cm thick, on wood, soc. Gliocladium sp. and Chaetosphaeria pulviscula, 3 Sep. 2004, H. Voglmayr & W. Jaklitsch W.J. 2671 (WU 29173, culture CBS 119286 = C.P.K. 2017). Holotype of Trichoderma albolutescens isolated from WU 29173 and deposited as a dry culture with the holotype of H. albolutescens as WU 29173a. Other specimens examined: Austria, Kärnten, Klagenfurt Land, St. Margareten im Rosental, Tumpfi, MTB 9452/4, 46°32′35″ N, 14°25′32″ E, elev. 565 m, on decorticated branch of Alnus glutinosa second 1.5 cm thick, on wood, 25 Sep. 2006, H. Voglmayr & W. Jaklitsch, W.J. 2986 (WU 29174). Niederösterreich, Scheibbs, Lunz am See, forest
path from Schloß Seehof in direction Mittersee, MTB 8156/3, 47°50′40″ N, 15°04′25″ E, elev. 630 m, on decorticated branches of Corylus avellana and Fraxinus excelsior, on wood, soc. Nemania chestersii, 16 Oct. 2003, H. Voglmayr & W. Jaklitsch, W.J. 2459 + 2460, WU 29171. Tirol, Innsbruck-Land, Ampass, Ampasser Hügel, MTB 8734/2, 47°15′31″ N, 11°27′13″ E, elev. 700 m, on decorticated branches of Corylus avellana, Quercus robur and Alnus incana, on wood, soc. rhizomorphs, 2 Sep. 2003, W. Jaklitsch & U. Peintner, W.J. 2352 + 2356 (WU 29170). Vienna, 10th district, recreation park Wienerberg, MTB 7864/1, 48°09′56″ N, 16°20′56″ E, elev. 220 m, on thin decorticated branches of well-rotted ?Populus tremula, 1–3 cm thick, on wood, erumpent from holes, between thick fibres, soc. Eutypa sp., Lycogala epidendron, 13 Jun. 2004, W. Jaklitsch, W.J. 2509 (WU 29172). 22nd district, Lobau, at Panozzalacke, MTB 7865/1, 48°11′06″ N, 16°29′20″ E, elev. 150 m, on branches of Prunus padus, 18 Nov. 2006, W. Jaklitsch, W.J.