Abstract
Sporisorium warambiense is described and illustrated from the ovaries of Xerochloa laniflora from the Pilbara region of Western Australia. The smut fungus is characterized by sori restricted to the ovaries, presence of three simple, stout, narrowing columellae, dark reddish-brown spore balls, dimorphic spores (darker outer spores and lighter inner spores), and the absence of sterile cells. The differences between Sporisorium warambiense and three other smuts that infect Xerochloa (Sporisorium xerofasciculatum, Tilletia xerochloae, and Ustilago xerochloae), as well as comparable Sporisorium species on other grass genera from the tribe Paniceae are discussed. All Xerochloa smuts are endemic to Australia.
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Acknowledgements
We are grateful to Dr. Krzysztof Pawłowski (Kraków, Poland) for translating the Latin description, to Anna Łatkiewicz (Kraków, Poland) for help with the SEM pictures, and to the Curators of K and DAR for the loan of specimens. Karina Knight (herbarium PERTH, Western Australia) is thanked for providing specimen collection details.
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Taxonomical novelty: Sporisorium warambiense M. Piątek & R.G. Shivas
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Piątek, M., Shivas, R.G. Sporisorium warambiense sp. nov., a fourth smut fungus on Xerochloa in Australia. Mycol Progress 10, 57–60 (2011). https://doi.org/10.1007/s11557-010-0673-6
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DOI: https://doi.org/10.1007/s11557-010-0673-6