Blastobotrys plurivorus M. Groenew., M.T. Sm, Hern.- Restr. & Decock, sp. nov. MB 860915. Fig. 7.

Etymology: plurivorus (Lat., noun); named as strains from this species were isolated from various substrates.

Typus: The Netherlands, isolated from mouse-dung, 1977, unknown collector (holotype designated here and preserved in a metabolically inactive state, CBS 137.78; ex-type strain CBS 137.78).

Description: Budding cells globose, 1.5–2.5 µm diam, or ovoid, 2–4 × 2.5–5 µm. Hyphae hyaline, septate, without denticles, 1.5–2.5 µm wide. Pseudohyphae hyaline without denticles. Secondary conidia produced by primary conidia at the apex, globose 1–1.5 µm diam.

Sexual reproduction has not been observed in the single strains nor in the pairwise mixtures.

Culture characteristics: After 2 wk at 24 °C on GPYA the culture is snow-white, dry, dull, tough and corrugated.

Physiological characteristics: Fermentation of D-glucose and D-galactose is weak (delayed) and is absent for sucrose, maltose, lactose, raffinose and trehalose. Carbon compounds assimilated are D-glucose, D-galactose, lactose © Westerdijk Fungal Biodiversity Institute 320 (weak), trehalose, maltose, cellobiose, L-sorbose, D-xylose, L-arabinose, D-ribose, glycerol, erythritol, D-mannitol, D-sorbitol, glucosamine, N -acetyl-D-glucosamine, potassium-2-keto-D-gluconate and D-glucuronate, while growth is absent on sucrose, raffinose, melibiose, melezitose, methyl-α-D-glucoside, L-rhamnose, inositol, lactic acid and D-gluconate.

Growth is positive on ethylamine, L-lysine, cadaverine and D-glucosamine HCl and negative on nitrate as sole nitrogen compounds. Growth occurred at 6 °C and 30 °C and is absent at 37 °C. Growth in the presence of 0.01 % cycloheximide is positive.

Additional materials examined: France, Occitanie, from a basidiome of Donkioporia expansa (Polyporales) growing on Quercus wood, Jan. 2014, C. Decock, strain CBS 17992 = MUCL 55272; Mediterranean area, from a basidiome of Fomitiporia pseudopunctata (Hymenochaetaceae), Apr. 2015, C. Decock, strain CBS 18001 = MUCL 46524.

Distribution and substrates: This species is known from France (basidiome), and The Netherlands (mouse dung). According to the GlobalFungi database, samples with identical ITS sequences were obtained from samples originating from St. Helena (Peak Dale), Iran, Europe (Austria, Belgium, Czech Republic, Estonia, France, Germany, Hungary, Netherlands, Sweden, and UK), and North America (Canada), growing on soil, deadwood, shoot, and air samples from forest, woodland, cropland and anthropogenic biomes.

Notes: The three B. plurivorus strains, CBS 137.78, CBS 18001 and CBS 17992 are identical in both the ITS and LSU regions. The ex-type strain (CBS 137.78) differs from the ex-type strain (CBS 140.71) of B. farinosus with 75 nt (29 gaps) and 28 nt (five gaps) in the ITS (533 nt) and LSU (842 nt) regions respectively. Blastobotrys plurivorus and B. farinosus showed no significant physiological differences (Table 3).