A revision of Beaumontia Wallich, Kibatalia G. Don and Vallariopsis Woodson (Apocynaceae)

This publication is a taxonomic revision on monographic basis of the three Apocynaceae genera Beaumontia Wallich, Kibatalia G. Don and Vallariopsis Woodson (tribe Nerieae of the Apocynoideae). For this revision material from 43 herbaria has been examined. Living material has been collected and studied in Indonesia (Java and Kalimantan). Two special field trips were carried out in Kalimantan and several trips were made in Java.

All species have been fully described, typified and illustrated, including one for the first time. Literature and synonymy have been treated. Keys to the species, genus descriptions and distribution maps have been prepared.

In Kalimantan the author discovered a species new to science, previously only represented in the herbaria among unnamed material collected in Sarawak and Johore: Kibataliavillosa Rudjiman.

The revision of the genera Beaumontia , Kibatalia and Vallariopsis was made, as these occur in Indonesia and were in need of revision. Most other genera of the Nerieae have recently been revised, mainly by other authors.

An introduction details the relationship with other genera of the Nerieae tribe in the Apocynoideae subfamily. The 18 genera presently understood as belonging in Nerieae can be classified in 5 species groups.