Asteromidium Speg., Anal. Soc. cient. argent. (1888)
Facesoffungi number: FoF 07126
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 ://www.gbif.org/).
Asteromidium imperspicuum (redrawn from Sutton 1980) a Conidia. b Vertical section of conidioma. c Conidiogenous cells and developing conidia.
Li et al. 2020