No.16  ZU-LIN NING, BO PAN, WANG WEN, MING KANG & XUE-YING ZHUANG

Primulina yingdeensis, a new species from Guangdong, China, and P. rosulata, a new combination (Gesneriaceae), based on morphological and molecular evidence

Willdenowia 43(3): 399 ‒ 409.

ABSTRACT

Based on morphological and molecular data, a new species of Gesneriaceae, Primulina yingdeensis, from Guangdong, China, is described and illustrated. It is morphologically most similar to P. hochiensis and P. hochiensis var. rosulata, but the three taxa differ from each other in discrete characters. They share yellow honey guides, but in the new species these are strongly ridged and with glands. At the same time, also based on morphological and molecular data, P. hochiensis var. rosulata is raised to the rank of species, as P. rosulata.

Fig. 1. Majority rule consensus Bayesian tree based on combined sequence data from the nuclear internal transcribed spacer (ITS) and three plastid markers (trnL­trnF, rpl32­trnL and atpB­rbcL). Numbers above branches are posterior probability values.

Fig. 2. Primulina yingdeensis – A: habit; B: front view of flower; C: side view of flower; D: opened corolla showing stamens and staminodes; E: adaxial view of stamens; F: abaxial view of stamens; G & H: pistil with calyx; I: stigma; J: young fruit with persistent calyx. – All drawn from the holotype by Yun-Xiao Liu.

Fig. 3. Primulina yingdeensis – A & B: plants in natural habitat at type locality, 4 Aug 2013; C & D: plants cultivated in South China Botanical Garden; E: pistil, calyx removed; F: inflorescence; G: front view of flower; H: corolla opened showing stamens and staminodes; I: style and stigma; J: side view of flower; K: side view of stamens; L: calyx lobes. – Scale bars: H, J & L = 1 cm. – All photographs by Zu-Lin Ning.