Fungalpedia – Note 1633, Rhodesiopsis
Rhodesiopsis B. Sutton & R. Campb.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi
Saprobic on leaves of host plant. Sexual morph: undetermined. Asexual morph: Conidiomata orange-yellow, acervular, scattered to gregarious, initially immersed, becoming erumpent, circular to oval or irregular in outline, unilocular, glabrous, gelatinous, dehiscing by an irregular split in the overlying host tissue. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis in the basal part. Conidiophores arising from the inner wall layer of basal stroma, hyaline, cylindrical to subcylindrical, branched, septate, smooth-walled, invested in mucus. Conidiogenous cells hyaline, enteroblastic, annellidic, clavate to subcylindrical, integrated, indeterminate, smooth-walled, with percurrent proliferation. Conidia hyaline, ellipsoid to fusiform, with an obtuse or acute apex and a narrow and truncate base, unicellular, thick- and smooth-walled, guttulate, bearing a infundibuliform, flame-like or irregular, mucoid appendage at one end or both ends.
Notes: Rhodesiopsis is a monotypic genus. The ellipsoid to fusiform conidia with mucoid, apical appendage can be confused with those of Allantophomopsiella, Allantophomopsis and Zelandiocoela. However, Rhodesiopsis can be separated from these genera by its acervular conidiomata and annelidic conidiogenous cells with up to 7 annellations (Nag Raj 1993). There is no molecular data for Rhodesiopsis. Therefore, new collections are needed to epitypify the genus and to place it in a natural classification.
Type species: Rhodesiopsis gelatinosa B. Sutton & R. Campb., Nova Hedwigia 30: 290 (1979) [1978].
Other accepted species: Species Fungorum – search Rhodesiopsis.
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.