Primulina hunanensis, a new species of Gesneriaceae from limestone area in southern Hunan, China

25 February 2015

Cai, Xiu-Zhen; Tian, Jing; Xiao, Shun-Yong; Peng, Ling; Liu, Ke-Ming

A new species of Gesneriaceae, Primulina hunanensis, is described and illustrated from southern Hunnan, China. Morphologically, it is similar to P. cordata (=Chirita cordifolia), but differs from the latter by having much larger leaves, broadly ovate or ovate bracts, 2- -12 (- -25)-flowers, longer peduncle and purple corolla. It also resembles P. eburnea in the shape of bract and the colour of corolla, but it can be distinguished by longer petioles (9- -25 cm long), cordate, ovate-cordate or broadly ovate leaf lamina with rounded or obtuse apex, not entire leaf margin either cordate or deeply cordate leaf base. The detailed morphological characters, diagnostic comparisons, habitat and micmorphology of seeds and pollen under SEM are presented.