Feng CHEN, Ya-Ping CHEN, Chi XIONG, Hou-Lin ZHOU, Chun-Lei XIANG

Paraphlomis nana (Lamiaceae), a new species from Chongqing, China

Most species of Paraphlomis are distributed in the south of the Yangtze River in China. In this study, a new species, P. nana, from northeast Chongqing in the north of the Yangtze River is described and illustrated. Bayesian inference and maximum likelihood analyses based on two nuclear ribosomal DNA regions (ITS and ETS) and three plastid DNA markers (rpl32-trnL, rps16, and trnL-trnF) were carried out to explore the phylogenetic position of the new species within Paraphlomis. Though the nuclear and plastid trees reveal incongruent placements of P. nana in Paraphlomis, which may be caused by chloroplast capture, a close relationship between the new species and P. albiflora is supported by molecular phylogenetic, morphological, and geographic evidence. However, the two species can be clearly distinguished from each other by the plant height and lamina and calyx morphology

PDF

___

Bendiksby M, Thorbek L, Scheen AC, Charlotte L, Olof R (2011). An updated phylogeny and classification of Lamiaceae subfamily Lamioideae. Taxon 60: 471–484.
Chen YP, Drew BT, Li B, Soltis DE, Soltis PS et al. (2016). Resolving the phylogenetic position of Ombrocharis (Lamiaceae), with reference to the molecular phylogeny of tribe Elsholtzieae. Taxon 65: 123–136.
Chen YP, Liu A, Yu XL, Xiang CL (2021). A preliminary phylogenetic study of Paraphlomis (Lamiaceae) based on molecular and morphological evidence. Plant Diversity 43: 206–215.
Chen YP, Sun ZP, Xiao JF, Yan KJ, Xiang CL (2022). Paraphlomis longicalyx (Lamiaceae), a new species from the limestone area of Guangxi and Guizhou Provinces, southern China. Systematic Botany (In press).
Chen YP, Wilson TC, Zhou YD, Wang ZH, Liu ED et al. (2019). Isodon hsiwenii (Lamiaceae: Nepetoideae), a new species from Yunnan, China. Systematic Botany 44: 913–922.
Ding BY, Chen ZH, Xu YL, Jin XF, Wu DF et al. (2019). New species and combination of Lamiaceae from Zhejiang, China. Guihaia 39: 10–15.
Harley RM, Atkins S, Budantsev AL, Cantino PD, Conn BJ et al. (2004). Labiatae. In: Kubitzki K, Kadereit JW, editors. The Families and Genera of Vascular Plants, Vol. 7. Berlin: Springer Verlag, pp. 167–275.
Li HW, Hedge IC (1994). Lamiaceae. In: Wu CY, Raven PH, editors. Flora of China, Vol. 17. Beijing: Science Press & St. Louis: Missouri Botanical Garden Press, pp. 269–291.
Miller MA, Pfeiffer W, Schwartz T (2010). Creating the CIPRES science gateway for inference of large phylogenetic trees. In: Proceedings of the Gateway Computing Environments Workshop (GCE). New Orleans: Gateway Computing, pp. 1–8.
Oliver JC. 2013. Microevolutionary processes generate phylogenomic discordance at ancient divergences. Evolution 67: 1823–1830. Rieseberg LH, Soltis DE (1991). Phylogenetic consequences of cytoplasmic gene flow in plants. Evolutionary Trends in Plants 5: 65–84.
Ronquist F, Teslenko M, van der Mark P, Ayres DL, Darling A et al. (2012). MrBayes 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology 61: 539–542.
Stamatakis A (2014). RAxML version 8: a tool for phylogenetic analysis and post-analysis of large phylogenies. Bioinformatics 30: 1312–1313.
Stover B, Müller K (2010). TreeGraph 2: Combining and visualizing evidence from different phylogenetic analyses. BMC Bioinformatics 11: 1–9.
Thiers B (2021). Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. http://sweetgum.nybg.org/science/ih/ (last accessed 15 September 2021).
Tsitrone A, Kirkpatrick M, Levin DA (2003). A model for chloroplast capture. Evolution 57: 1776–1782.
Whitfield JB, Lockhart PJ (2007). Deciphering ancient rapid radiations. Trends in Ecology & Evolution 22: 258–265.
Wu CY, Li HW (1977). Paraphlomis Prain. In: Wu CY, Li HW, editors. Flora Reipublicae Popularis Sinicae, 65 (2): 545–572. Beijing: Science Press
Zhang RB, Deng T, Dou QL, Wei RX, He L et al. (2020). Paraphlomis kuankuoshuiensis (Lamiaceae), a new species from the limestone areas of northern Guizhou, China. PhytoKeys 139: 13–20.