New Taxa
The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



No.25 Zhi-Jing Qiu , Jun Zhang, Xavier-Ravi Baskaran,Jin Hu, Zhen-Yu Li & Zheng-Yu Liu

 

Petrocosmea nanchuanensis (Gesneriaceae), a new species from Chongqing, China

 

PhytoKeys 157: 137144 (2020)

 



 

ABSTRACT

 

A new species, Petrocosmea nanchuanensis Z.Y. Liu, Z.Y. Li & Z.J. Qiu from Mt. Jinfo at Banhe valley of Nanchuan District in Chongqing Municipality (China) is described and illustrated for the first time. Even though this new species is similar to Petrocosmea barbata Craib, it has several significant morphological differences, which includes smaller leaves, repand leaf margin, densely appressed longer pubescences on both surfaces of leaves, larger flower with length of its lower lips about three times longer than that of the upper lips, oblong lower lip lobes, shorter pistil, ovate anthers and styles that are shortly pubescent or approximately glabrous above the middle. The distinct features of P. nanchuanensis and four relative species namely, P. barbata, P. longipedicellata W.T. Wang, P. cavaleriei Lévl. and P. xanthomaculata G.Q. Gou & X.Y. Wang were also represented in depth. However, P. nanchuanensis is most closely related to P. barbata, based on molecular studies.

        Original article link: https://phytokeys.pensoft.net/article/33625/download/pdf/





The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)

Figure 1. Drawing of Petrocosmea nanchuanensis Z.Y. Liu, Z.Y. Li & Z.J. Qiu, sp. nov. A habit B stamens C dissected corolla D calyx and pistil.

 







The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)

Figure 2. Petrocosmea nanchuanensis Z.Y. Liu, Z.Y. Li & Z.J. Qiu A habitat B flowering plants C flower, front view D flower, side view E flower, front view, showing pistil and anthers F hairs on abaxial leaves G stamens H hairs on the pistil.

 

 






The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)

Figure 3. Drawing of the most parsimonious tree generated from six cpDNA and two nrDNA regions (partial & unpublished). Bootstrap values are shown above branches and Bayesian posterior probabilities are indicated below branches.

 






The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)

Figure 4-6 Petrocosmea nanchuanensis Z.Y. Liu, Z.Y. Li & Z.J. Qiu (Photoed by Fang Wen)

 




The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)



The newest published taxa and newest record of Gesneriaceae from China before 31 December 2020 (25)

Figure 7-10 Petrocosmea nanchuanensis Z.Y. Liu, Z.Y. Li & Z.J. Qiu (Photoed by Xin-Xin Zhu)