Sordariomycetes, Sordariomycetidae, Diaporthales, Stilbosporaceae
Saprobic on the host plant in terrestrial habitat. Sexual morph: undetermined. Asexual morph: Conidiomata brown to black, stromatic, acervular, solitary to gregarious or confluent, immersed to semi-immersed, subglobose, unilocular, thick-walled. Conidiomatal wall composed of thick-walled, hyaline to brown cells of textura angularis to textura globulosa. Conidiophores usually reduced to conidiogenous cells or if present, hyaline, cylindrical, short, unbranched, septate, and arising from the innermost layer cells of conidiomata. Conidiogenous cells hyaline, annellidic, lageniform to cylindrical, smooth-walled. Conidia hyaline, ellipsoid with a rounded apex and a broadly truncate base, 1-septate, slightly constricted at septum, bearing several appendages, unbranched, filiform, divergent, flexuous, and arising in apical crest.
Notes: Crinitospora was introduced by Sutton and Alcorn (1985) to accommodate C. pulchra which was initially described from twigs of Mangifera indica in Australia. The genus is characterized by acervular, subglobose conidiomata, annellidic conidiogenous cells and ellipsoid, 1-septate conidia bearing mostly 5–6 apical appendages. Morphologically, C. pulchra is similar to Comatospora suttonii (type species of Comatospora) in form of conidia and conidiogenous cells, but is distinguished by conidiomata structure (acervular in C. pulchra vs pycnidial in C. suttonii). Crous et al. (2014a) epitypified C. pulchra based on an isolate collected from twigs of M. indica in Thailand and accommodated Crinitospora in Melanconidaceae (Diaporthales). Our phylogenetic analysis based on LSU data shows that Crinitospora clustered with Stilbospora with well support (Fig. 7); this result agreed with Senanayake et al. (2017). Therefore, Crinitospora belongs to Stilbosporaceae. The genus is monotypic.
Distribution: Australia, Thailand (Sutton and Alcorn 1985, Crous et al. 2014a).
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.