Asterostomella
Asterostomella Speg., Anal. Soc. cient. argent. 22(4): 198 (1886).
Index Fungorum number: IF 7271; Facesoffungi number: FoF 06730, 87 morphological species (Species Fungorum 2022), 1 species with molecular data.
Leaf parasites. Sexual morph: Unknown. Asexual morph: Mycelium ectophytic, appressoria lateral, setae absent. Pycnothyria orbicular with radiating cells, astomatous, dehisce stellately at the center; pycnothyriospores ovate, pyriform, brown. (adapted from Hosagoudar 2012).
Type species: Asterostomella paraguayensis Speg.
Notes: Asterostomella is characterised by ectophytic mycelium, orbicular pycnothyria with radiating cells and ovate, pyriform, brown pycnothyriospores. Asterostomella is a distinct genus in Asterinaceae. Several authors added new species to Asterostomella (Petrak & Ciferri 1932, Doidge 1942, Batista & Ciferri 1959, Rao & Anahosur 1972, Singh et al. 1982, Hosagouder & Goos 1994, Aliyarukunju et al. 2018). Species delineation in Asterostomella has been done based on fruiting body diameter and conidial sizes (Reynolds & Gilbert 2005). Hyde et al. (2020) confirmed the placement of Asterostomella in Asterinaceae based on phylogenetic analysis of LSU and SSU sequence data. Molecular data is available for only one species A. grewiae (LSU, SSU) in GenBank. Fresh collections and more DNA sequence data are needed to confirm the taxonomic placement of the genus.
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