Jasminum extensum wall. ex G. Don (Oleaceace), a new record to the flora of Vietnam

Abstract

One rare, poorly known species from India, South China and Thailand - Jasminum extensum Wall. ex G. Don is recently discovered in Vietnam representing a new record to the flora of the country. The plant differs from its closely related species viz. Jasminum pierreanum in having coriaceous leaves and 5-6 primary veins in each side of the mid-rib. Detailed information on taxonomy, types, morphology, habitat, ecology, distribution and studied voucher specimens, as well as illustrations are provided here for species identification.