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Type: Article
Published: 2020-09-08
Page range: 231–241
Abstract views: 20
PDF downloaded: 31

Studies on Parmulariaceae II. Re-examination of Hysterostomella, Mintera, Rhipidocarpon and Viegasella

Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, People’s Republic of China
Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, People’s Republic of China
Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, People’s Republic of China
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LI-ZHOU TANG

Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University,Yunnan, China
Innovation Startup College, Qujing Normal University, Qujing, Yunnan 655011, People’s Republic of China
Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand;Environmental Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand
No. 128/1-J, Azad Cooperative Housing Society, Curca, P.O. Goa Velha 403108, India
Centre of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand
Dothideomycetes Parmulariales pathogens taxonomy types Fungi

Abstract

This is the second in a series of papers in which we examine the type species of genera in Parmulariaceae. Specimens of type species of Hysterostomella, Mintera, Rhipidocarpon and Viegasella are re-examined and their descriptions and illustrations are provided. Hysterostomella is characterized by large, black, circular or elliptical ascostromata, later becoming irregular, rather flat and opening by irregular fissures. Asci are subglobose, obovoid and bitunicate and ascospores are dark brown, ellipsoidal with a single septum. Mintera is similar to Viegasella in having radiating, loculate ascostromata forming on leaf surfaces. However, Mintera is distinguished by its appressoriate mycelium. Rhipidocarpon has carbonaceous, flattened ascostromata with ridges, irregularly radiating from centre to the outer rim, becoming a fan-shape, ridges containing elongated locules, which open by a longitudinal slit and contain numerous asci. Based on their morphological characters, the placement of the genera in Parmulariaceae is confirmed.