The Autoecious Species of Puccinia on North American Eupatoriae
George Baker Cummins, M. P. Britton, John Baxter
Abstract
George Baker Cummins, M. P. Britton, John Baxter
Abstract
SUMMARYNineteen species and 3 varieties are recognized. Three new species are described: Puccinia potosina on Eupatorium longifolium in Mexico, P. sinaloana on Eupatorium sagittatum in Mexico, and P. obesiseptata on Eupatorium sp. in Mexico. The varieties are: P. kuhniae var. robusta var. nov. on Brickellia and Kuhnia spp., P. kuhniae var. decora (Diet. & Holw.) comb. nov. (Puccinia decora Diet. & Holw.) on Brickellia sp., and P. conoclinii var. depressipora var. nov. on Piqueria standleyi. P. eupatorii is reported for North America. A key to the species is provided and photomicrographs of type material are provided for 18 species.
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SUMMARYNineteen species and 3 varieties are recognized. Three new species are described: Puccinia potosina on Eupatorium longifolium in Mexico, P. sinaloana on Eupatorium sagittatum in Mexico, and P. obesiseptata on Eupatorium sp. in Mexico. The varieties are: P. kuhniae var. robusta var. nov. on Brickellia and Kuhnia spp., P. kuhniae var. decora (Diet. & Holw.) comb. nov. (Puccinia decora Diet. & Holw.) on Brickellia sp., and P. conoclinii var. depressipora var. nov. on Piqueria standleyi. P. eupatorii is reported for North America. A key to the species is provided and photomicrographs of type material are provided for 18 species.
Key concepts: Eupatorium, Biology, Botany, Puccinia, Key (lock), Ecology, Mildew