Mariannaea

Mariannaea is a genus of fungi belonging to the family Nectriaceae. The genus has cosmopolitan distribution. The fungal genus was formally established by Samson (1974) to accommodate M. camptospora, M. elegans and the variety M. elegans var. punicea and was typified by M. elegans. The genus is characterized by branched, septate conidiophores with hyaline, flask-shaped phialides, 1–2-celled hyaline conidia mostly forming imbricate chains or slimy heads (Samson 1974; Samson and Bigg 1988; Samuels and Seifert 1991). The sexual morph of Mariannaea has been linked to genus Nectria (Samuels and Seifert 1991), and genus Cosmospora (Gräfenhan et al. 2011). However, Cosmospora and Nectria have been shown polyphyletic within the Nectriaceae family, while genus Mariannaea formed a monophyletic clade within Nectriaceae. Therefore, Gräfenhan et al. (2011) retained Mariannaea as a distinct genus in Nectriaceae. Five new species were further introduced in the genus (Crous et al. 2019; Hyde et al. 20......read more on Wikipedia.