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

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, 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.

Petrocosmea duyunensis (Gesneriaceae), a new species from Guizhou, China

“…All morphological characteristics were observed under a dissecting microscope (Olympus SZ61, Tokyo, Japan), and descriptions were made following the terminology used in Wang et al (1998) . The relevant literature was consulted, including Xu et al (2011) , Qiu et al (2012) , Zhang et al (2013) , Han et al (2018) , Wen (2019) , Jiang et al (2020) , Qiu et al (2020) , Huang and Xin (2021) , in addition to those mentioned in the introduction. The images of type specimens available in virtual herbaria and databases, including RBGE ( https://data.rbge.org.uk/search/herbarium/ ), Kew Herbarium Catalogue ( http://apps.kew.org/herbcat/navigator.do ), MNHN ( https://www.mnhn.fr/en ), PE ( https://pe.ibcas.ac.cn/index.html ), and iPlant ( http://www.iplant.cn/ ) were also examined.…”

“… Deinanthera W.T. Wang ( Qiu and Liu 2015 ; Qiu et al 2015 ). Presently, the genus comprises 56 species with three varieties ( GRC 2021 ).…”

Petrocosmea purpureomaculata sp. nov. and P. wui sp. nov. (Gesneriaceae) from Yunnan, China with additions to P. coerulea and P. parryorum

“…Through literature research and studies in the lab and herbaria, we determined that P. parryorum is indeed distributed in China, but so is an undescribed species similar to P. parryorum which we here describe as P. purpureomaculata . Furthermore, the material identified by Qiu (Qiu and Liu 2015) as P. coerulea C.Y. Wu ex W.T.…”

Petrocosmea adenophora (Gesneriaceae), a new species from Yunnan, China

“…In April 2017, during a botanical expedition in SE Yunnan Province, near Vietnam's border, we collected some specimens and living plants bearing buds of an unknown species of Petrocosmea . Later, when they flowered in our greenhouse, we compared the plants with all recognized species of the genus in the relevant literature (Wang 1984, 1985, Wang and Pan 1998, Burtt 1998, Wang et al 1998, Li and Wang 2005, Wei and Wen 2009, Gou et al 2010, Middleton and Triboun 2010, Wei et al 2010, Zhao and Shui 2010, Qiu et al 2011, 2012, 2015, Shaw 2011, 2019, Xu et al 2011, Wang et al 2011, Zhang et al 2013, Qiu and Liu 2015, Han et al 2017, 2018a, 2018b, Li et al 2019, Wen 2019, Yang et al 2019) and against specimens of this genus in major herbaria: E, HITBC, IBK, IBSC, K, KUN, MO, NY, PE, US. We found that our newly collected specimen can be distinguished from most other species of Petrocosmea .…”