Ciliosporella
Ciliosporella Petr., Annls mycol. 25(3/4): 217 (1927)
Sordariomycetes, Xylariomycetidae, Xylariales, Microdochiaceae
Saprobic on the host plant (Fabaceae and Myrtaceae) in terrestrial habitats. Sexual morph: undetermined. Asexual morph: Conidiomata pale brown to brown or dark brown, stromatic, pycnidial, solitary to gregarious or confluent, deeply immersed, globose to depressed globose, unilocular or multilocular, glabrous, papillate, ostiolate. Ostiole single, short, rounded, excentric. Conidiomatal wall of textura angularis or textura angularis to textura epidermoideat, thick-walled, brown, becoming paler toward the conidial hymenium. Paraphyses hyaline, filiform, unbranched, smooth-walled, originating from inner layer cells of conidiomata or from conidiophores. Conidiophores formed from the innermost wall layers of conidiomata, reduced to conidiogenous cells, when present hyaline, branched or unbranched, septate, smooth-walled. Conidiogenous cells hyaline, enteroblastic, phialidic, subcylindrical to lageniform, discrete or integrated, determinate, smooth-walled. Conidia hyaline, fusiform to naviculate, truncate at base, acute at apex, 0–2-septate, attenuated at the apex into a rostrate tubular, unbranched appendage.
Type species: Ciliosporella selenospora Petr., Annls mycol. 25(3/4): 217 (1927)
Notes: Ciliosporella was described form Trifolium alpestre in Australia (Petrak 1927). Nag Raj (1974, 1993) re-described and re-illustrated the genus. Yuan et al. (1997) described a second species C. tuberculiformis Z.Q. Yuan & C. Mohammed on Eucalyptus regnans (Myrtaceae) in Tasmania. Ciliosporella tuberculiformis is distinguished from C. selenospora by its larger conidia, host plant and geographical distribution. We re-examined the isotype of C. selenospora, and found it has hyaline, filiform, paraphyses and 0–1-septate conidia. Thus an emended description for Ciliosporella is provided. In addition, two fresh collections on Colutea arborescens and Galega sp. from Italy share similar morphology of conidiomata, conidiogenous cells and conidia with C. selenospora and C. tuberculiformis, but are distinguished by conidia dimensions and septation, as well as conidiomatal structure. Therefore, a new species Ciliosporella italica is introduced for these two strains. Our phylogeny, based on LSU sequence data show that Ciliosporella is related to Sordariomycetes (Fig. 78). Fresh collections of the generic type are needed to confirm its placement.
Distribution: Austria, Italy (Nag Raj 1993, this study).
Key to species
1. Paraphyses present, conidia 0–2-septate...................................................................... 2
1. Paraphyses absent, conidia aseptate................................................... C. tuberculiformis
2. Conidiophores cylindrical, branched, septate, average size of conidia 27 × 3.5 µm............ .............................................................................................................. C. selenospora
2. Conidiophores reduced to conidiogenous cells, average size of conidia 35 × 3µm............. ........................................................................................................................... C. italica
References:
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.
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