Abstract
Dermea was protected against its synonym, Foveostroma, due to its well-circumscribed generic concept and more frequent use. We describe and illustrate Dermeachinensissp. nov. based on its morphological characteristics and a molecular analysis of the internal transcribed spacer (ITS) and large subunit (LSU) sequence data. Dermeachinensis is isolated from Betulaalbosinensis with sexual and asexual morphs and can be distinguished from D.molliuscula on Betula trees by its aseptate and wider ascospores. The connection between the two morphs is proved based on sequence data. Here, we describe the asexual morph of D.pruni for the first time based on morphological and molecular data from the same host and country of origin, and compare it with other species of Prunus.
Highlights
Dermea Fr. (Dermateaceae, Helotiales) was first proposed based on D. cerasi (Fries, 1825), which is the sexual morph of the type species of Micropera Lév. (Léveillé, 1846) and Foveostroma DiCosmo (DiCosmo 1978), namely M. drupacearum and F. drupacearum, respectively
The two species from this study appeared in two distinct clades, and three strains of Dermea chinensis from the Betula albosinensis cluster in a well-supported clade (MP/ML = 100/100) (Fig. 1)
Dermea chinensis from Betula trees is introduced, which can be distinguished from D. molliuscula by aseptate and wider ascospores, and from other species by host association (Table 2)
Summary
Dermea Fr. (Dermateaceae, Helotiales) was first proposed based on D. cerasi (Fries, 1825), which is the sexual morph of the type species of Micropera Lév. (Léveillé, 1846) and Foveostroma DiCosmo (DiCosmo 1978), namely M. drupacearum and F. drupacearum, respectively. (Dermateaceae, Helotiales) was first proposed based on D. cerasi (Fries, 1825), which is the sexual morph of the type species of Micropera Lév. Groves (1946) accepted 16 species in Dermea and proposed a key for this genus based mainly on the characteristics of apothecia, asci, ascospores, and conidia, along with host associations. Dermea tumifaciens (Ramakrishnan & Ramakrishnan, 1948), D. pruni (Groves, 1951), D. grovesii (Reid & Pirozynski, 1966), D. rhytidiformans Ning Jiang & Cheng-Ming Tian / MycoKeys 50: 79–91 (2019)
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