Ascomycota, genera » Ascomycota, incertae sedis


Asteromidium Speg., Anal. Soc. cient. argent. (1888)


Index Fungorum: IF 7263


Ascomycota, genera incertae sedis.


Parasitic on living leaves of Sapindaceae. Sexual morph: undetermined. Asexual morph: Conidiomata dark brown, acervular, solitary to gregarious, pulvinate to doliiform, immersed, globose, unilocular, glabrous. Ostiole absent. Conidiomatal wall composed of thick-walled, pale brown to hyaline cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells hyaline, holoblastic, cylindrical, discrete, indeterminate, smooth-walled, with 1–2 sympodial proliferations, scars unthickened, flat. Conidia hyaline, fusiform to cylindrical with obtuse apex and truncate base, 3-septate, smooth-walled (Sutton 1980; Quaedvlieg et al. 2013).


Type species: Asteromidium imperspicuum Speg., Anal. Soc. cient. argent. 26(1): 66 (1888)


Notes: Asteromidium shares similar morphology of conidiogenous cells with Diplosporonema, Phloeosporella, Stictosepta and Septocyta, and the differences among these genera see notes of Phloeosporella. Sutton (1980) provided a detail description and illustration for Asteromidium. There is no molecular data available.


Distribution: Brazil, Paraguay, Sweden (Sutton 1980, https ://





Asteromidium imperspicuum (redrawn from Sutton 1980) a Conidia. b Vertical section of conidioma. c Conidiogenous cells and developing conidia.





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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