Genus

About: Genus is a research topic. Over the lifetime, 68921 publications have been published within this topic receiving 590966 citations. The topic is also known as: monospecies genus & genus (zoology).

Polyphyletic origins of species of the anamorphic genus Geosmithia and the relationships of the cleistothecial genera: Evidence from 18S, 5S and 28S rDNA sequence analyses

Abstract: The anamorphic genus Geosmithia, with the type species G. lavendula, includes species strictly lacking a teleomorph as well as species associated with the teleomorphs Talaromyces and Chromocleista. Our 18S rDNA sequence-based tree, inferred from 1586 alignable sites from 57 selected taxa within the Ascomycota and using two basidiomycetes as out- groups, clearly demonstrates that Geosmithia is a poly- phyletic taxon with evolutionary affinities to at least three groups of the euascomycete lineage within the

A Conspectus of Myriophyllum (Haloragaceae) in North America

Abstract: Thirteen species of the genus Myriophyllum are found in North America; ten are native, three have been introduced. A key to the species is provided and previous conflicting taxonomic treatments are assessed. The possibility of a polyploid series involving four species is considered and dismissed. Eight of the common species are found to exhibit sufficient phenotypic plasticity to account for most if not all the taxonomic problems encountered.

Australian leaf-inhabiting fungi

Abstract: Two recently collected Vizella specimens are the first records of this asco-mycete genus in Australia. The genus is discussed and the Australian specimens are described as V. banksiae sp.nov. and V. oleariae sp.nov. The latter possesses a conidial and an apparently spermatial state. In both species the asci arise from a complex system of proliferating croziers. The new family Vizellaceae is described to accommodate Vizella and Blasdalea and is regarded as fairly closely related to the Asterinaceae.