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

Autor: Qiu ZJ; Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen and Chinese Academy of Sciences, Shenzhen, 518004, China Shenzhen and Chinese Academy of Sciences Shenzhen China., Zhang J; Chongqing Institute of Medical Plant Cultivation, Nanchuan, Chongqing, 408435, China Chongqing Institute of Medical Plant Cultivation Chongqing China., Baskaran XR; Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen and Chinese Academy of Sciences, Shenzhen, 518004, China Shenzhen and Chinese Academy of Sciences Shenzhen China.; School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China Chinese Academy of Sciences Beijing China., Hu J; Guangdong Eco-Engineering polytechnic, Guangzhou, Guangdong, 510520, China Chongqing Jinfo Mountain Forest Ecosystem Field Scientific Observation and Research Station Chongqing China., Li ZY; State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China Sun Yat-sen University Guangzhou China., Liu ZY; Chongqing Institute of Medical Plant Cultivation, Nanchuan, Chongqing, 408435, China Chongqing Institute of Medical Plant Cultivation Chongqing China.; Resource Center, China Academy of Chinese Medical Sciences, Beijing, 100000, China Guangdong Eco-Engineering polytechnic Guangdong China.
Jazyk: angličtina
Zdroj: PhytoKeys [PhytoKeys] 2020 Aug 26; Vol. 157, pp. 137-144. Date of Electronic Publication: 2020 Aug 26 (Print Publication: 2020).
DOI: 10.3897/phytokeys.157.33625
Abstrakt: 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 , 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 , P. cavaleriei and P. xanthomaculata were also represented in depth. However, P. nanchuanensis is most closely related to P. barbata , based on molecular studies.
(Zhi-Jing Qiu, Jun Zhang, Xavier-Ravi Baskaran, Jin Hu, Zhen-Yu Li, Zheng-Yu Liu.)
Databáze: MEDLINE
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