Pithomyces flavus Berk. & Broome, J. Linn. Soc., Bot. 14(no. 74): 100 (1873) [1875]
MycoBank number: MB 224189; Index Fungorum number: IF 224189; Facesoffungi number: FoF 11464;
Synonym: Astrosphaeriella vesuvius (Berk. & Broome) D. Hawksw. & Boise, Sydowia 38: 122 (1986) [1985]
Saprobic on submerged twig in a freshwater stream. Asexual morph: Colonies on substratum scattered, velvety, light yellow to orange yellow. Mycelium superficial, composed of pale brown to yellow, verruculose, branched hyphae, 2.8-3.5 µm wide. Conidiophores arising laterally and irregularly on the hyphaer, mononematous, macronematous or reduced, verruculose. Conidiogenous cells monoblastic. Conidia acrogenous, solitary, dry, mid brown to dark brown, ellipsoidal to broadly fusiform, verruculose to spinulose, 4–6-euseptate, darkened at the septa, 25–42 × 17.4–24.6 µm ( = 34 × 20.5 µm, n = 40), slightly constricted at the septa, paler at both end cells. Sexual morph: not observed in this study.