Primulina liangshengyui (Gesneriaceae), a New Species from Guangxi, China with Supplementary Description of Floral Morphology of P. minutimaculata

Abstract:

Primulina liangshengyui R. F. Li & L. Ding, a new species of Gesneriaceae from the limestone of Guangxi, China is described and illustrated. It resembles P. minutimaculata (D. Fang & W. T. Wang) Yin Z. Wang, but can be easily distinguished by a combination of characters, especially in its leaf blades both sides very short white strigillose; bracts adaxially glabrous, abaxially densely white strigillose; calyx lobes both sides densely glandular puberulent; corolla tube purple and gradually fading to white at the base; filaments glandular puberulent. There is only one population with less 500 mature individuals at the type locality. Thus, this species was provisionally assessed as Vulnerable Endangered [VU D2] by using IUCN criteria. Further, supplemented and described of floral morphology of P. minutimaculata is also appended, based on plenty of specimens with flowers and field works, and especially according to living plant in bloom.

Key words:Flora of Guangxi;New taxon;Limestone flora;Primulina liangshengyui;P. minutimaculata