Skip to main content

Smilax ligneoriparia sp. nov.: A link between herbaceous and woody Smilax (Smilacaceae) based on morphology, karyotype and molecular phylogenetic data

Buy Article:

$16.27 plus tax (Refund Policy)

Abstract:

A population of Smilax found in southeastern Yunnan was originally considered to be a local race of S. riparia with unusual woody, perennial stems, but its status as a distinct species is supported here by morphology, karyology, and molecular phylogenetics. This new species, Smilax ligneoriparia C.X. Fu & P. Li, shares several unique morphological characteristics with S. riparia, such as ovate herbaceous leaves and smooth stem lacking prickles, but its stem is "woody" and its chromosome number is 2n = 32, unlike that of S. riparia (2n = 30). Molecular phylogenetic analysis also confirms that it is distinct, but tentatively supports the position of this new taxon as sister to a clade of woody Asian species, which in turn is sister to the herbaceous, annually emergent Smilax clade. Herbarium specimens show that S. ligneoriparia has been collected in at least three locations in southeastern Yunnan and southern Zhejiang Provinces, but we suspect that the population from Xichou, occurring on limestone mountain slopes at 1550–1600 m, may be the only extant population.

Keywords: HETEROSMILAX; MISSING LINK; NEW SPECIES; SMILACACEAE; SMILAX LIGNEORIPARIA; YUNNAN

Document Type: Research Article

Affiliations: 1: The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education, College of Life Sciences, Zhejiang University, Hangzhou 310058, China; Laboratory of Systematic and Evolutionary Botany, Institute of Plant Sciences and Conservation Center for Gene Resources of Endangered Wildlife, Zhejiang University, China 2: The Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education, College of Life Sciences, Zhejiang University, Hangzhou 310058, China; Laboratory of Systematic and Evolutionary Botany, Institute of Plant Sciences and Conservation Center for Gene Resources of Endangered Wildlife, Zhejiang University, China 3: College of Life Sciences and Technology, Tongji University, Shanghai 200092, China 4: Department of Botany, University of Wisconsin, Madison, Wisconsin 53706, U.S.A.

Publication date: 2011-08-01

  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more