A new species of Stigmatodiscus ( Ascomycota , Dothideomycetes , Stigmatodiscaceae ) from Juan de Nova (Mozambique Channel, Scattered Islands, French Southern and Antarctic Lands)

Plant and Fungal Systematics

article

Remy Poncet¹  Hermann Voglmayr²  Lionel Kervran³ 

[1]UMS 2006 PatriNat ,(OFB – CNRS – MNHN), Muséum national d’Histoire naturelle

[2]University of Vienna, Department of Botany and Biodiversity Research

[3]Muséum national d’Histoire naturelle

关键词: Indian Ocean;    Africa;    Tropics;    Stigmatodiscales;    Mozambique Channel;   

DOI  :  10.35535/pfsyst-2022-0007

来源: Walter de Gruyter GmbH

【 摘 要 】

Stigmatodiscus touroultii (Stigmatodiscaceae, Stigmatodiscales) is described and illustrated from corticated dead twigs of Salvadora angustifolia collected in Juan de Nova (Scattered Islands, Mozambique Channel). It is characterized by the irregularly shaped pruinose hymenial disc without distinct black marginal lips and a calcium oxalate crystal layer in the epithecium. Phylogenetic analyses of a multigene matrix containing a representative selection of Dothideomycetes from four genes (nucSSU-ITS-LSU rDNA, RPB2, TEF1 and TUB2) revealed a highly supported placement within Stigmatodiscus as sister species to Stigmatodiscus oculatus. Micromorphology of the sexual and asexual morph matches the genus Stigmatodiscus. A key to all known species worldwide is provided.

【 授权许可】

Unknown