A taxonomic revision of four complexes in the genus Pourthiaea (Rosaceae)

doi:10.3389/fpls.2017.00199

CORC > 植物研究所 > 中国科学院植物研究所 > 系统与进化植物学国家重点实验室

	A taxonomic revision of four complexes in the genus Pourthiaea (Rosaceae)
	Liu, Bin-Bin ; Hong, De-Yuan
刊名	PHYTOTAXA
	2017
卷号	325 期号:1 页码:1-75
关键词	Photinia population sampling standard deviation statistics typification
ISSN号	1179-3155
DOI	10.3389/fpls.2017.00199
文献子类	Article
英文摘要	The taxonomy of four species complexes of Pourthiaea (i.e., P. arguta, P. pilosicalyx, P. salicifolia, and P. sorbifolia), distributed in E, S, and SE Asia, is extremely controversial among authors. This situation may have been caused by the lack of proper analysis and evaluation of the characters at the population level used previously. The present study is the first comprehensive taxonomic revision of these four complexes. We conducted extensive field observations, population sampling, examination of a large number of specimens, and did subsequent statistical analysis of the characters. All the morphological characters used in previous taxonomic treatments were evaluated one by one at the population level. They are length, width, margin, number of lateral veins, type of base, type of apex, and shape of leaf blade, length of petioles, type of inflorescences, length of pedicels, and density of indumentum on leaf blade and inflorescences. All these characters were found to be extremely variable within population and continuously varied between populations, and thus they are of little value for delimiting species. However, seven characters, i.e., width of leaf blade, lateral veins of leaf blade parallel or not, lower surface of leaf blade glabrescent or not, type of fruit, sepals caducous or not, number of carpels, and ratio of number of fertile seeds to that of total seeds, were found distinctly different (for qualitative characters) or statistically discontinuous ( for quantitative characters), and thus they are valuable for species delimitation in these four complexes. As a result, we recognize four species and two subspecies, P. pilosicalyx, P. salicifolia, P. sorbifolia, and P. arguta which consists of two subspecies: subsp. arguta and subsp. pustulata. Two new combinations, P. sorbifolia (W. B. Liao & W. Guo) B. B. Liu & D. Y. Hong and P. arguta subsp. pustulata (Lindl.) B. B. Liu & D. Y. Hong, are proposed herein. Forty-one taxa are reduced as new synonyms, and 20 lectotypes are designated here.
学科主题	Plant Sciences
电子版国际标准刊号	1179-3163
出版地	AUCKLAND
语种	英语
出版者	MAGNOLIA PRESS
WOS记录号	WOS:000394296600001
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [J1310002]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22055]
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 2.[Liu, Bin-Bin 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Bin-Bin,Hong, De-Yuan. A taxonomic revision of four complexes in the genus Pourthiaea (Rosaceae)[J]. PHYTOTAXA,2017,325(1):1-75.
APA	Liu, Bin-Bin,&Hong, De-Yuan.(2017).A taxonomic revision of four complexes in the genus Pourthiaea (Rosaceae).PHYTOTAXA,325(1),1-75.
MLA	Liu, Bin-Bin,et al."A taxonomic revision of four complexes in the genus Pourthiaea (Rosaceae)".PHYTOTAXA 325.1(2017):1-75.