Varioseptispora chinensis L. Qiu, Jian Ma, R.F. Castañeda & X.G. Zhang, sp. nov.
MycoBank number: MB 833083; Index Fungorum number: IF 833083; Facesoffungi number: FoF. Fig. 1
Differs from Helminthosporium and Spadicoides spp. by its clavate conidia (3–)4–5 distoseptate with a basal euseptum.
Type: China, Hainan Province: Jianfengling Mountain, on decaying twigs of an unidentified broadleaf tree, 15 April 2014, J. Ma (holotype, HJAUP M0405).
Etymology: refers to the country in which the fungus was collected.
Colonies on natural substrate effuse, hairy dark brown. Mycelium partly superficial, partly immersed in the substrate, composed of branched, pale brown, septate, smooth-walled hyphae. Conidiophores macronematous, mononematous, unbranched, erect, straight or slightly flexuous, cylindrical, smooth, septate, brown to dark brown, 124–216 × 7.5–9.5 µm, with 1 enteroblastic percurrent regeneration. Conidiogenous cells polytretic, integrated, cylindrical, terminal, determinate, smooth, brown, 17–32.5 × 6.5–8 µm. Conidial secession schizolytic. Conidia solitary, acropleurogenous, dry, straight or slightly curved, clavate, apex rounded or with conical apex ending in a rounded papilla, base truncate, smooth-walled, reddish brown, (3–)4–5-distoseptate with 1-euseptate near the base, 30–38 × 11.5–14 µm, 3–4 µm wide at the truncate base.
Fig. 1. Varioseptispora chinensis (holotype, HJAUP M0405). A, B. Conidiophores, conidiogenous cells, and conidia; C. Conidiogenous cells, and conidia; D, E. Conidiophores; F. Conidia.