Alpestrisphaeria Thambugala & K.D. Hyde, in Thambugala et al., Fungal Diversity. 74: 214 (2015), Index Fungorum number: IF 551232

Saprobic on dead wood, soil in terrestrial habitats. Sexual morph: Ascomata scattered, or clustered in small groups, erumpent, coriaceous to carbonaceous, black, subglobose, covered with sparse, brown, septate hyphae, ostiolate. Ostiole slit-like, central, suborbicular, papillate, periphysate, with a pore-like opening. Hamathecium comprising numerous, hyaline, filiform, septate, pseudoparaphyses between and above the asci, embedded in a hyaline gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, clavate or cylindrical, sometime curved, pedicellate, rounded at the apex with an ocular chamber. Ascospores bi or uni seriate or partially overlapping, filamentous or fusiform, hyaline or becoming brown at maturity, multi septate, verruculose or smooth, lacking a mucilaginous sheath. Asexual morph: undetermined.

Type species: Alpestrisphaeria terricola (G.S. Gong) Thambug. & K.D. Hyde, in Thambugala et al., Fungal Diversity 74: 214 (2015)
Basionym: Trematosphaeria terricola G.S. Gong, Mycol. Progr. 13(1): 33–43 (2013) [2014]


Key to species of Alpestrisphaeria

1. Cylindrical asci with filamentous, hyaline, 10–15-euseptate ascospores ……………………………………………………… A. jonesii
1. Clavate asci with fusiform hyaline to brown, 3-septate ascospores ………………………………………………………….. A. terricola

Species