The new species Puccinia telimutans causes Mexican potato rust disease of wild potatoes and shows a unique telial metamorphosis.

Puccinia telimutans is described as a new species of rust fungi (Basidiomycota, Pucciniales) and causal agent of Mexican potato rust disease of the endemic wild potatoes Solanum demissum and S. verrucosum from Mexico. It is microcyclic and produces telia that show a unique succession of one-celled, catenulate teliospores that germinate upon maturity, followed by resting teliospores that are pedicellate and two-celled.

A taxonomic revision of the genus Puccinia on Lycieae, a tribe of Solanaceae.

We present a taxonomic and phylogenetic study of Puccinia species (rust fungi) infecting tribe Lycieae (Solanaceae), with focus on the New World taxa. Phylogenetic analyses using nuclear (nuc) rDNA 5.8S-ITS2 (ITS2) and mitochondrial (mt) cytochrome oxidase subunit 3 (CO3) show that Puccinia species occurring on Lyciae are grouped in two major lineages, one New World and one Old World.

Competing sexual and asexual generic names in and () and recommendations for use.

With the change to one scientific name for pleomorphic fungi, generic names typified by sexual and asexual morphs have been evaluated to recommend which name to use when two names represent the same genus and thus compete for use. In this paper, generic names in and are evaluated based on their type species to determine which names are synonyms. Twenty-one sets of sexually and asexually typified names in and eight sets in were determined to be congeneric and compete for use.

Revision of the rust genus Uromyces on Cucurbitaceae.

This study revises Uromyces (Pucciniales or Uredinales) on the economically important plant family Cucurbitaceae and presents descriptions, illustrations and a key to aid determination of the 17 recognized species and four varieties. Seven species are described as new: Uromyces aimeae, U. aquiriensis, U.

Rust fungi on Annonaceae II: the genus Dasyspora Berk. & M.A. Curtis.

Dasyspora gregaria, the single species of the allegedly monotypic rust genus Dasyspora (Basidiomycota, Pucciniales), was investigated by light microscopy and DNA sequencing (ITS1-5.8S-ITS2 region, partial LSU and SSU of the nuclear rDNA, mt cytochrome oxidase subunit 3). Both methods indicated that D.

The Puccinia species of Berkheya (Asteraceae) with description of four new species from South Africa.

Puccinia species (rust fungi, Pucciniales, formerly Uredinales) occurring on Berkheya (syn. Stobaea) of Asteraceae are critically evaluated. Puccinia berkheyicola, P.

Rust fungi on Annonaceae: the genus Sphaerophragmium.

Seven species of the rust genus Sphaerophragmium occur on members of the tropical plant family Annonaceae. Uropyxis gerstneri is recombined to S. gerstneri.

The rust mycobiota of southern Africa: species richness, composition, and affinities.

The rust mycobiota (Uredinales, Basidiomycota) of southern Africa (Botswana, Namibia, and South Africa) is analysed with regard to species richness, generic composition, and similarities to the rust mycobiotas of the remaining African continent and other regions of the world. Southern Africa is home to about 546 rust species: ca 522 species have been reported from South Africa, 73 from Namibia, and less than ten from Botswana. Thirty-two species were considered to be exotics.

Additions to the rust fungi of Argentina.

A contribution is made to the rust fungus flora of Argentina: Puccinia baccharidis-boliviensis, P. cordyceps, P. pucarae, and Aecidium hypseocharidicola are described as new species.