Hypocreales » Nectriaceae


Cosmospora Rabenh., Hedwigia 2: 59 (1862)

Hypocreomycetidae, Hypocreales, Nectriaceae, Cosmospora

Index Fungorum number: IF 1273; 27 species with sequence data.


Saprobic on woody plant hosts. Sexual morph: Ascomata perithecial, aggregated or scattered, stroma absent or inconspicuous, pyriform, bright red or orange red, turning dark red in KOH+, smooth-walled, apex acute or papillate. Asci 8-spored, unitunicate, cylindrical to narrowly clavate, with an apical ring. Ascospores uni- to partly biseriate, hyaline on immaturity, becoming yellow brown to reddish brown when mature, 1-septate, becoming tuberculate on maturity. Asexual morph: Hyphomycetous. Conidiophores acremonium-like, hyaline, comprising lateral phialides on somatic hyphae, or one or two layers of monochasial branching, or verticillate. Phialides hyaline, monophialidic, cylindrical to subulate to subclavate. Microconidia hyaline, ellipsoidal, oblong or clavate or slightly allantoid, aseptate, forming slimy heads. Macroconidia hyaline, absent or rare, subcylindrical, curved, slightly narrow on both ends, apical cell usually marginally hooked with a more or less pointed tip, basal cell barely pedicellate or not, 3–5-septate (adapted from Rossman et al. 1999, Gräfenhan et al. 2011 and Lombard et al. 2015).


Type species: Cosmospora coccinea Rabenh., Fungi europ. exsicc.: no. 459 (1862)


       Notes: Cosmospora is typified by C. coccinea Rabenh. (Rossman et al. 1999). Cosmospora sensu Rossman accommodates approximately 73 species (Gräfenhan et al. 2011; Lombard et al. 2015; Zeng and Zhuang 2016). Luo et al. (2019) introduced a new Cosmospora species based on the isolates obtained from submerged wood in freshwater habitats.



Species illustrated in this entry:

Cosmospora aquatica Z.L. Luo, H.Y. Su & K.D. Hyde


About Sordariomycetes

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