Fungalpedia – Note 1643, Septopatella
Septopatella Petr.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi
Saprobic on the host plant in terrestrial habitat (e.g. Pinaceae) (Minter and Caine 1980, Dyko and Sutton 1979). Sexual morph: undetermined. Asexual morph: Conidiomata dark brown to black, solitary to gregarious, superficial, initially closed, ultimately become erumpent, oval to roundish or irregular in outline, cupulate in section view, sessile, unilocular, hypostroma extending into stomata of host. Ostiole absent, dehiscence by irregular breakdown of the apical wall. Conidiomatal wall composed of thick-walled, dark brown cells of textura angularis in the basal part, becoming textura porrecta in the lateral part. Conidiophores arising from inner layer of cells of basal and lateral walls, cylindrical, branched at the base, septate, smooth-walled, invested in mucus. Conidiogenous cells hyaline, holoblastic, sympodial, cylindrical, integrated, indeterminate, smooth-walled. Conidia hyaline, filiform, with acute apex, 2–7-septate, smooth-walled, guttulate (Dyko and Sutton 1979).
Notes: Septopatella is monotypic. The conidiomata and conidiogenous cells of S. septata have been reported as acervular, and phialidic, respectively (Morgan-Jones and Kendrick 1972, Morgan-Jones 197). Dyko and Sutton (1979) re-examined the type specimen and showed that the conidiomata are cupulate, sessile, and the conidiogenous cells are holoblastic, with sympodial proliferation. Septopatella resembles Fujimyces in form of conidiomata and conidia. The differences between these genera are conidiogenous cells monoblastic in Fujimyces vs sympodial proliferating in Septopatella and conidia are 3-septate in Fujimyces vs 2–7-septate in Septopatella. However, these differences could be regarded as features to distinguish each at the species level. Both are associated with Pinus, with Septopatella collected on needles of Pinus montana, P. nigra, and P. ponderosa, and Fujimyces on dead needles or cone apophyses of P. sylvestris. Therefore, Fujimyces is considered a synonym of Septopatella, as the latter has priority. Fresh collections of both types are needed to confirm this synonymy.
= Fujimyces Minter & Caine, Trans. Br. mycol. Soc. 74(2): 434 (1980)
Type species: Septopatella septata (Jaap) Petr., Annls mycol. 23(1/2): 129 (1925)
Other accepted species: Species Fungorum – search Septopatella.
Figure 1 – Septopatella septata (redrawn from Dyko and Sutton 1979) a Vertical section of conidioma. b Conidiophores, conidiogenous cells and developing conidia. c Conidia.
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.