Fungalpedia – Note 408, Octosporopsis
Octosporopsis U. Lindem. & M. Vega
Citation when using this data: Tibpromma et al. (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Pyronemataceae, Pezizales, Pezizomycetidae, Pezizomycetes, Pezizomycotina, Ascomycota, Fungi.
Based on morphological and phylogenetic analyses of ITS, LSU, and TEF1-α, Octosporopsis was introduced by Lindemann et al. (2014) as a monotypic genus within the Pyronemataceae to accommodate the type species, Octosporopsis nicolai (basionym: Humaria nicolai). Egertová et al. (2018) introduced, Octosporopsis erinacea as the second species in this genus. Currently, only two species are accepted in this genus with only the sexual morph, which was collected from Kotlabaea (Dumortiera hirsuta and Lunularia cruciata) in Belgium, France, Germany, Malaysia, the Netherlands, Portugal, and Spain (Lindemann et al. 2014, Egertová et al. 2018). Octosporopsis is mainly characterized by sessile, obconical-to-disc-shaped apothecia, pale yellow, salmon pink to orange hymenium, margin slightly bulged to membranous, with hyaline hairs, 8-spored, operculate, not amyloid, base pleurorhynchous asci, hyaline, broadly ellipsoid to broadly subfusoid ascospores, with minute refractive light brownish droplets, thin-walled at maturity, later becoming thick-walled, filiform, light brownish, apically swollen paraphyses, hyaline, thick-walled, walls one-layered, multi-septate hairs (Lindemann et al. 2014). Phylogenetically, Isalonactis is closely related to Rhodoscypha and Rhodotarzetta. However, it is morphologically distinct from Rhodoscypha and Rhodotarzetta, with little similarity between them (Lindemann et al. 2014). Octosporopsis can be distinguished from other genera based on its morphology and phylogeny (Lindemann et al. 2014).
Type species: Octosporopsis nicolai (Maire) U. Lindem., M. Vega & T. Richt.
Other accepted species: Species Fungorum – search Octosporopsis
Figure 1 – Morphological features of Octosporopsis nicolai. a Apothecia. b Ascospores. c Asci. d Paraphysen. e Hairs. Scale bars: a, c–e = 20 µm, b = 10 μm. Redrawn from Lindemann et al. (2014).
References
Entry by
Liu XF, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China; Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand; School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)
Published online 26 November 2024