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Clinoconidium onumae, comb. nov. (Cryptobasidiaceae) producing galls on shoot buds of Cinnamomum tenuifolium in Japan

MAKOTO KAKISHIMA, HIDEYUKI NAGAO, JING-XIN JI, YUE SUN, CVETOMIR M. DENCHEV

Abstract


A new combination, Clinoconidium onumae, is proposed to accommodate Ustilago onumae (syn. Melanopsichium onumae) from Japan, producing galls on shoot buds of Cinnamomum tenuifolium (Lauraceae). This taxonomic treatment is based on observations of gastroid sporulation in peripheral lacunae of the host galls and basidiospore morphology. This species is morphologically and phylogenetically similar to Cl. cinnamomi producing galls on fruits of Ci. burmannii, reported from Taiwan, but differs by having larger basidiospores and different morphology of the gall structures, and by affecting different plant organs.

Keywords


Cinnamomum japonicum, Cinnamomum tenuifolium, Clinoconidium, Cryptobasidiaceae, evergreen tree, Exobasidiales, Lauraceae, plant disease, taxonomy

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DOI: http://dx.doi.org/10.11646/phytotaxa.313.2.3

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ISSN 1179-3155 (print); ISSN 1179-3163 (online)

Published by Magnolia Press, Auckland, New Zealand