Spadicoides americana C.J.K. Wang
Sexual morph: Undetermined. Asexual morph: Colonies effuse, hairy, dark brown to black. Mycelium partly immersed, partly superficial on woody substratum, composed of pale to dark brown, septate, 1.5–4 µm wide, slightly branched hyphae. Conidiophores macronematous, mononematous, unbranched, solitary or in small groups, erect, straight or slightly flexuous, brown to dark brown, paler towards the apex, up to 416 µm long, up to 22 septate, rounded apex, 3–5 µm wide, 4–7 µm wide near the base. Conidiogenous cells polytretic (up to 10 pores (loci) in single conidiogenous cell), integrated, terminal and intercalary. Conidia solitary, cylindrical, rounded at both ends, with a small hilum at the base, with thick and dark band at the septa, predominately 2-septate, concolored, brown to dark brown, thick-walled, smooth, (10.5–14.5) µm × (4–6.5) µm (average 12.5 µm × 5 µm, n=30).
Distribution: CHINA, Zhejiang Province, Hangzhou city, on submerged wood in a stream at Nine Creeks (Wongsawas et al. 2008).
Notes: Specimen collected from freshwater habitats HMZFW 00002. Sequence data is not available.
Luo ZL, Hyde KD, Liu JK, Maharachchikumbura SSN et al. 2019 – Freshwater Sordariomycetes. Fungal Diversity 99, 451–660.
Wongsawas M, Wang HK, Hyde KD, Lin FC (2008) New and rare lignicolous hyphomycetes from Zhejiang Province, China. J Zhejiang Univ Sci B 9:797–801
Fig.1. Light micrographs of Spadicoides americana. a A portion of the colonies on submerged wood. b A whole conidiophore. (c-d Conidiophores with conidia. e A portion of conidiophore showing rounded apex. Note the conidiogenous pores (loci). f Conidia.