Systematics of genus Uraria Desv. (Leguminosae) and related genera in Thailand

Abstract

This research aim to study systematics of Christia Moench, Uraria Desv. and Uraiopsis Schindl. in Thailand. The plant species were survey and specimens were collected from all Thailand floristic regions. The specimens were examined, described from both collected and dried specimen in herbaria in Thailand and abroad. Leaf anatomy was studied by Paraffin method. Leaf, seed and pollen micro-morphology were examined under LM and SEM and phylogenetic tree of the three genera were constructed based on ITS sequences. The results showed that Uraiopsis was reduced to synonym of Uraria. The following three species of Christia and fourteen species of Uraria are recognized. C. pierrei , U. balansae and U. barbaticaulis are a new record for Thailand. and U. pierrei is reduced to synonymy of Uraria rotundata. A key to the species, ecological, distribution data, and photographs are provided. Moreover, seed and pollen morphological, leaf epidermal and anatomical characters of thirteen, eight and fourteen species respectively are presented. The phylogenetic tree shown Urariosis is a member of Uraria. Seed and pollen morphological, leaf epidermal and leaf anatomical characters don’t supported for classification in generic level.

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