Corniculariella P. Karst., Hedwigia 23(4): 57 (1884)
= Cornularia Sacc., Syll. fung. 3: 598 (1884)
= Chondropodium Höhn., Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 125(1-2): 45 (1916)
Leotiomycetes, Leotiomycetidae, Medeolariales, Dermateaceae
Saprobic on plant host. Sexual morph: undetermined. Asexual morph: Conidiomata yellowish or dark brown to black, pycnidial, solitary to gregarious or confluent, deeply immersed in origin, becoming partly erumpent at maturity, subglobose or subcylindrical to subconical, slightly swollen at the base or level of the locule, narrow towards the apex, unilocular, the locule in the upper part of the conidiomata, thick-walled, minutely scabrous, usually lacking an ostiole but dehiscing by an irregular split in the apical region, or presenting an ostiole. Ostiole single, centrally located, with a long neck filled with long, hyaline paraphysate hyphae. Conidiomata wall composed of closely interwoven septate hyphae, compacted towards exterior. Conidiophores hyaline, cylindrical, branched, developed from inner layer of the conidiomata. Conidiogenous cells hyaline, enteroblastic, phialidic, cylindrical to lageniform, indeterminate, discrete or integrated, smooth, moderately thick-walled. Conidia hyaline, falcate or fusiform to clavate, tapering towards both ends, curved, septate, thick-walled, smooth, guttulate.
Type species: Corniculariella abietis P. Karst., Hedwigia 23(4): 57 (1884)
Notes: Corniculariella was introduced by Karsten 1840 based on C. abietis P. Karst. In the same year, Saccardo changed the name of Corniculariella to Cornularia, and described eight species in the genus. Subsequently, several new species were described (Karsten 1890). DiCosmo (1978) revised the genus and accepted seven species viz. C. abietes, C. harpographoidea Dearn. ex DiCosmo, C. hystricina (Ellis) DiCosmo, C. populi DiCosmo, C. pseudotsugae (W.L. White) DiCosmo, C. spina (Berk. & Ravenel) DiCosmo and C. urceola (Höhn.) DiCosmo. In addition, he provided an emended description and a key to the species. Based on the emended conception, Sutton (1991) added C. queenslandica B. Sutton to the genus. Oliveira (2014), described C. brasiliensis I.B. Cunha, et al. based on LSU and ITS sequence data. However, phylogenetic re-assessment of Leotiomycetes using LSU sequence data show that our new species, C. rhamni, is close to Dermea cerasi (Pers.) Fr., (Medeolariales, Dermateaceae), but is distant from C. brasiliensis (Helotiales, Chaetomellaceae) (Fig. 129). Morphologically, C. brasiliensis is similar to the type species C. abietis only in the conidia shape (falcate), but differs in various other ways and are probably not congeneric. Molecular data for the type and other species is not available and therefore classification of Corniculariella cannot be confirmed in the Dermateaceae. Examination of fresh material from the type locality and pure cultures are essential to confirm taxonomy and phylogeny of Corniculariella.
Distribution: Australia, Austria, Canada, Finland, Italy, UK, USA, (DiCosmo 1978, Sutton 1980, this study, https://www.gbif.org/).
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.