Cassytha pubescens and C. glabella (Lauraceae) are not disjunctly distributed between Australia and the Ryukyu Archipelago of Japan: evidence from morphological and molecular data

Kokubugata, Goro, Nakamura, Koh, Forster, Paul I., Wilson, Gary W., Holland, Ailsa E., Hirayama, Yumiko, and Yokota, Masatsugu (2012) Cassytha pubescens and C. glabella (Lauraceae) are not disjunctly distributed between Australia and the Ryukyu Archipelago of Japan: evidence from morphological and molecular data. Australian Systematic Botany, 25 (5). pp. 364-373.

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Abstract

Morphological comparisons and molecular phylogenetic analyses were conducted to resolve taxonomic confusion in Cassytha glabella and C. pubescens, both of which were first described from Australia and subsequently considered to be disjunctly distributed between Australia and the Ryukyu Archipelago of Japan. In the morphological comparisons, plants considered as C. pubescens in the Ryukyus differ from C. pubescens in Australia in the presence or absence of hairs on the petals, and those considered as C. glabella in the Ryukyus differ from the C. glabella in Australia in bract and peduncle morphology. The molecular analyses indicated that plants attributed to C. pubescens in the Ryukyus were not closely related to C. pubescens in Australia, and were nested in a clade of populations of a Pan-Western Pacific species C. filiformis. Plants attributed to C. glabella in the Ryukyus were distantly related to C. glabella in Australia. We concluded that plants considered as C. pubescens and C. glabella in the Ryukyus are to be respectively treated as C. filiformis and the Ryukyu endemic species C. pergracilis.

Item ID: 24147
Item Type: Article (Research - C1)
ISSN: 1030-1887
Date Deposited: 05 Dec 2012 05:29
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060310 Plant Systematics and Taxonomy @ 34%
06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060302 Biogeography and Phylogeography @ 33%
06 BIOLOGICAL SCIENCES > 0604 Genetics > 060409 Molecular Evolution @ 33%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales @ 34%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 33%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960899 Flora, Fauna and Biodiversity of Environments not elsewhere classified @ 33%
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