Kalmusia Niessl, Verh. nat. Ver. Brünn 10: 204 (1872).

Index Fungorum number: IF 2543; MycoBank number: MB 2543Facesoffungi number: FoF 00040; 27 morphological species (Species Fungorum 2020), 8 species with molecular data.

Saprobic on terrestrial habitats. Sexual stateAscomata small- to medium-sized, solitary, scattered or in small groups, immersed to erumpent, globose or subglobose, often laterally flattened, coriaceous, black-walled, with or without papilla. Hamathecium of dense, filliform, delicate, septate pseudoparaphyses, branching and anastomosing between and above asci, embedded in mucilage. Asci bitunicate, clavate with a long, furcate pedicel. Ascospores narrowly ovoid to clavate, pale brown, 3-distoseptate. Asexual state: unknown.

Type speciesKalmusia ebuli Niessl, Verh. nat. Ver. Brünn 10: 204 (1872).

Notes – Niessl (1872) introduced Kalmusia to accommodate Kalmusia ebuli as the type species (Ariyawansa et al. 2014d, Liu et al. 2015). Kalmusia species are characterized by having immersed to erumpent ascomata, filiform, delicate, septate pseudoparaphyses, bitunicate, clavate asci with narrowly ovoid to clavate, pale brown, 3-septate ascospores (Barr 1992a, Zhang et al. 2012b, Ariyawansa et al. 2014d, Liu et al. 2015). The asexual morph of this genus has coniothyrium-like, Cytoplea, Microsphaeropsis and Paraconiothyrium morphological characters (Zhang et al. 2012b, 2014b, Ariyawansa et al. 2014d). There are 27 Kalmusia epithets listed in Species Fungorum (2020).