Phlyctaeniella Petr., Annls mycol. 20(5/6): 323 (1922)
Faceoffungi number: FoF 07492
Ascomycota, genera incertae sedis
Saprobic on the host plant in terrestrial habitat, such as Humulus lupulus (Cannabaceae), Eucalyptus obliqua, Eucalyptus sp. (Myrtaceae) (Sutton 1980, Tiwari et al. 2012). Sexual morph: undetermined. Asexual morph: Conidiomata dark brown, pycnidial, solitary to gregarious or confluent, immersed to erumpent, globose, unilocular, glabrous. Ostiole indistinct, dehiscence by rupture of the apical wall. Conidiomatal wall composed of thin-walled, hyaline cells of textura angularis in the basal and lateral part, becoming pale brown, larger cells above. Conidiophores arising from the inner wall layer of basal stroma, hyaline, cylindrical to irregular, branched, septate, smooth-walled. Conidiogenous cells hyaline, ampulliform to cylindrical or irregular, integrated or discrete, determinate, smooth-walled, markedly tapered at the apices, with apical or lateral apertures, collarette minute. Conidia hyaline, filiform to fusiform, with narrowed and rounded apex, and truncate base, straight or slightly curved, multiseptate, smooth-walled, guttulate (adapted from Sutton 1980).
Type species: Phlyctaeniella polonica Petr., Annls mycol. 20(5/6): 323 (1922)
Notes: Phlyctaeniella is similar to Septoria in having pycnidial conidiomata and filiform to fusiform conidia, but it can be separated from the latter by its branched, septate conidiophores, whereas conidiophores are usually absent in Septoria (Tiwari et al. 2012, Quaedvlieg et al. 2013). Sutton (1980) re-described the genus based on P. humuli Petr.; the generic type has not been re-examined. Tiwari et al. (2012) introduced a new species from Eucalyptus sp. in India, and provided a key to five species of Phlyctaeniella. There is no molecular data available for Phlyctaeniella. Thus, fresh material and sequencing is needed to place Phlyctaeniella in a natural group.
Distribution: Austria, India, USA (Sutton 1980, Tiwari et al. 2012).
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.