Primulina pseudomollifolia W.B. Xu & Yan Liu and P. multifida B. Pan & K.F. Chung from karst caves in Guangxi Zhuangzu Autonomous Region, China are described and illustrated as two new species. Their generic placement in the recently recircumscribed Primulina is supported by phylogenetic analyses of DNA sequence nuclear ITS and chloroplast trnF-L intron spacer regions. Primulina pseudomollifolia is similar to P. mollifolia (D. Fang & W. T. Wang) J.M. Li & Y.Z. Wang in being densely pubescent on both blade surfaces, but differs in the base of its blades being cuneate to broadly cuneate, its 12-14 mm long white to pink corolla 8-9 mm long tubular corolla tube, 5-6 mm long filaments, 3 staminodes, and flowering from July to September. Primulina multifida resembles P. renifolia (D. Fang & D. H. Qin) J. M. Li & Y. Z. Wang, but differs in the blade margins being pinnatifid; its ovate to broadly ovate bracts, 3-4 × 1.5-2 mm, 5-7 mm long tubular corolla tube, 3-5 mm long filaments, 3 staminodes, linguiform stigma, and flowering from June to August.
Two new species, Primulina multifida and P. pseudomollifolia (Gesneriaceae), from karst caves in Guangxi, China
Publication: Botanical Studies