A contribution to the rust flora (Uredinales) of southern Africa, with an emphasis on Namibia

Polyphyly and two emerging lineages in the rust genera Puccinia and Uromyces

“…Most of the southern African specimens were collected and identified by M.M. (Mennicken and Oberwinkler, 2004, Mennicken et al, 2005a, Mennicken et al, 2005band Mennicken et al, 2005c. Specimens that were used in this study, with additional information on host species, life-cycle, geographic origin and GenBank accession numbers can be found in Table 1.…”

“…It must, however, be noted that certain Puccinia species also display two germ pores per cell (e.g. Puccinia abutili or Puccinia cephalandrae; Mennicken et al 2005b). All representatives of Cumminsiella are autoecious, most of them macrocyclic and they are naturally restricted to Mahonia and Berberis in the Americas (Baxter, 1957 andMcCain andHennen, 1982).…”

Epitypification of Tilletia ehrhartae, a smut fungus with potential for nature conservation, biosecurity and biocontrol

“…Veldtgrass was first reported in California in 1929, and known to have been imported as seed from Australia (Love 1948, cited in Pickart 2000. None of the other known co-evolved pathogens of Ehrharta calycina, including Ustilago sladenii (Vánky 2012), and Uromyces quaggafonteinus (Mennicken and Oberwinkler 2004;Berndt and Wood 2012) have reached Australia and California. This may imply that the introduction of Tilletia ehrhartae to Australia had been realized via infected seeds and occurred much earlier than 1981.…”

New species, reports, observations and taxonomical changes of southern African rust fungi (Uredinales)

“…So far, this has led to the publication of findings of several new species and observations on South African rust fungi (e.g. Mennicken et al 2003Mennicken et al , 2005. With the present paper we aim to contribute to the knowledge of the southern African rust mycobiota in several respects: (1) By describing new species and reporting new findings from South Africa, we emphasise the importance and necessity of continuing to survey the area mycologically.…”

“…Scale bar=10 μm Puccinia namibiana was described for the reason that the peridial cells of the aecia had very thick (ca. 9-13 μm) outer walls (Mennicken et al 2005). Aecidium acanthopsidis Syd.…”