Two new species of uvaria (Annonaceae) from Borneo, with a New Nomenclatural Combination

Abstract

Two new species of Uvaria L. (Annonaceae), U. beccarii Attanayake, I. M. Turner & R. M. K. Saunders and U. curvistipitata Attanayake, I. M. Turner & R. M. K. Saunders, are described and illustrated from Borneo. Uvaria beccarii is closely allied to a Peninsular Malaysian species, U. curtisii King, from which it differs in having distinctively nonapiculate, obovoid monocarps with a blunt, irregularly muricate surface and fewer seeds per monocarp. Uvaria curvistipitata closely resembles U. javana Dunal from Peninsular Malaysia, Sumatra, Java, and Borneo, as both species have a velutinous indument on many organs. Uvaria curvistipitata differs, however, in its red flowers and smaller, fewer-seeded globose to subglobose monocarps that are borne on longer, curved stipes. A new nomenclatural combination, U. clementis (Merr.) Attanayake, I. M. Turner & R. M. K. Saunders, is furthermore validated, based on the previously overlooked name Artabotrys clementis Merr., providing a legitimate name in Uvaria for the species. The names U. clementis and U. parviflora Hook. f. & Thomson are lectotypified here.