Primula zhui (Primulaceae) a new species from South Yunnan, southwest China

Primula zhui, a new species of Primulaceae from South Yunnan, southwest China, was published on Nordic Journal of Botany.

During the field expedition to survey plant diversity in Pu’er, South Yunnan, 2015-2017, specimens of Primula were collected. Based on a detailed examination of the morphological and anatomical characters of our material and possible closely similar species, we arrived at conclusion that the species collected in Yunnan belong to a species new to science, Primula zhui Y. H. Tan & B. Yang, affiliated to Primula sect.Carolinella (Hemsl.) Pax.,a new species of Primula endemic to Yunnan Province, China. It is similar to Primula intanoensis T.Yamaz.distributed in Thailand, and Primula calyptrata X. Gong & R.C. Fang from China, but can be easily distinguished from the former by its longer corolla tube (1.4–1.6 cm long,2–2.5 times as long as the calyx) and distylous flowers(Fig.1  A-D); it differs from the latter byits ovate-eliptic toovate-oblong leaf bladeand distylous flowers(Fig. 2).

The species epithet zhui honors Prof. Zhu Hua from the Xishuangbanna Tropical Botany Garden, Chinese Academy of Sciences, who worked on plant taxonomy and biogeography and made great contributions on tropical flora in China, especially in South Yunnan.

This work was financially supported by a project of the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Y4ZK111B01).The result published as "Primulazhui (Primulaceae) a new species from South Yunnan, southwest China" on Nordic Journal of Botany.


Figure1. Primula zhui sp. nov. (A) and (B) habit, (C) thrum flowers in anterior view, (D) pin flowers in anterior view, (E) inflorescence, showing the persistent calyx, (F) inflorescence in lateral view, showing the corolla tube, (G) pin and thrum flowers, (H) leaf blade in adaxial view, (I) leaf blade in abaxial view. Photographed by H. B. Ding.


Figure 2. Primula zhui sp. nov. and Primula calyptrata. (A)–(D) P. zhui, (E)–(J) P. calyptrata. Photographed by H. B. Ding, Bin Yang and Lei Wu.