Abstract
The type specimen of Uredo cissi-debilis on Cissus debilis from Côte d’Ivoire was found to bear aparaphysate telia, in which a chain of two to four teliospores was formed on a short pedicel. The teliospores were thin-walled and germinated in situ. Another fungus identified as U. cissi-debilis on Cayratia gracilis from Sierra Leone was also found to form teliospores similar to those of the Cissus rust fungus in paraphysate telia. The teliospore morphology and host relationships showed their taxonomic affinity to Kuehneola vitis on Ampelocissus latifolia distributed in South Asia. It was concluded that presence or absence of paraphyses in sori and spore morphology, in addition to the assumed host preference, distinguish between the three fungi. New names, K. cissi-debilis comb. nov. and K. deightonii sp. nov., were proposed for the Cissus fungus and the Cayratia fungus, respectively.
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Acknowledgments
I would like to express my gratitude to Dr. Robert Vogt, Curator, the Mycological Herbarium, Boanischer Garten und Botanisches Museum Berlin-Dahlem, for the loan of the type material examined in this study. Part of the study was carried out while staying at the Arthur Herbarium, Purdue University in 1998–1999. I thank Dr. Joe F. Hennen, Prof. Emer., then director of the Herbarium, for providing me with an opportunity to study rusts fungi as a visiting researcher. I also thank Dr. Catherine Aime, Director of the Arthur Fungarium, Purdue University, for the loan of vitaceous rust specimens. This study was supported, in part, by a Grant-in-Aid for Scientific Research No.18570081 from the Japan Society for the Promotion of Sciences.
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This study complies with current laws and regulations of Japan. Part of this study was presented at the 59th Annual Meeting of the Mycological Society of Japan held in May 2015.
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Ono, Y. Kuehneola species (Phragmidiaceae, Pucciniales) on Vitaceae plants. Mycol Progress 14, 50 (2015). https://doi.org/10.1007/s11557-015-1076-5
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DOI: https://doi.org/10.1007/s11557-015-1076-5