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Citation for Study 13806

Citation title: "More problems despite bigger flowers: systematics of Cuscuta tinctoria clade (subgenus Grammica, Convolvulaceae) with description of six new species".

Study name: "More problems despite bigger flowers: systematics of Cuscuta tinctoria clade (subgenus Grammica, Convolvulaceae) with description of six new species".

This study is part of submission 13806 (Status: Published).

Citation

Costea M., Garcia I., Docksteder K., & Stefanovic S. 2013. More problems despite bigger flowers: systematics of Cuscuta tinctoria clade (subgenus Grammica, Convolvulaceae) with description of six new species. Systematic Botany, .

Authors

• Costea M.
• Garcia I.
• Docksteder K.
• Stefanovic S. (submitter) +1-905-569-4271

Abstract

Cuscuta tinctoria clade, the second largest infrageneric group of subg. Grammica, includes 14 species with Mexico and adjacent regions as a center of diversity, but also two species found in Australia presumably as a result of a long-distance dispersal event. Flowers, pollen, and stigmas are among the largest in Cuscuta, and plants are xenogamous or facultatively xenogamous. Perhaps more than in other major clades of subg. Grammica, the convergent evolution of some important morphological characters, for example of the calyx and gynoecium/capsule, has obscured identity of some species and has hindered previous efforts to determine their limits. Basic morphology, scanning electron microscopy and sequence data from the nuclear internal transcribed spacer (ITS) and the plastid trnL-F region were used to reconstruct the phylogeny, gain a better understanding of the evolutionary history, and determine species boundaries. Overall, species were grouped in five subclades. Based on their morphological and molecular similarly, C. tinctoria, C. aurea, and C. floribunda represent one single species. The latter two species were retained as a variety of the former, C. tinctoria var. aurea and var. floribunda, respectively. Our results also show that in their currently accepted delimitation C. rugosiceps and C. tinctoria are polyphyletic, the former including one new species, C. volcanica, and the latter two new species, C. timida and C. tolteca. In addition, three other new species are described: two that have multicellular protuberances on the calyx and/or corolla lobes, C. iguanella and C. insolita, and one with broader that long calyx lobes, C. montana. A taxonomic treatment with an identification key, descriptions, and illustrations is provided.

Keywords

Australia, Cuscuta, dodders, evolution, floristics, geographical distribution, host range, ITS, morphology, Mexico, new species, North and Central America, parasitic, phenology, phylogeny, taxonomy, trnL-F

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S13806
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref21669,
  	 author = {Mihai  Costea and Ignacio  Garcia and Kristy  Docksteder and Sasa  Stefanovic},
  	 title = {More problems despite bigger flowers: systematics of Cuscuta tinctoria clade (subgenus Grammica, Convolvulaceae) with description of six new species},
  	 year = {2013},
  	 keywords = {Australia, Cuscuta, dodders, evolution, floristics, geographical distribution, host range, ITS, morphology, Mexico, new species, North and Central America, parasitic, phenology, phylogeny, taxonomy, trnL-F},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Botany},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Cuscuta tinctoria clade, the second largest infrageneric group of subg. Grammica, includes 14 species with Mexico and adjacent regions as a center of diversity, but also two species found in Australia presumably as a result of a long-distance dispersal event. Flowers, pollen, and stigmas are among the largest in Cuscuta, and plants are xenogamous or facultatively xenogamous. Perhaps more than in other major clades of subg. Grammica, the convergent evolution of some important morphological characters, for example of the calyx and gynoecium/capsule, has obscured identity of some species and has hindered previous efforts to determine their limits. Basic morphology, scanning electron microscopy and sequence data from the nuclear internal transcribed spacer (ITS) and the plastid trnL-F region were used to reconstruct the phylogeny, gain a better understanding of the evolutionary history, and determine species boundaries. Overall, species were grouped in five subclades. Based on their morphological and molecular similarly, C. tinctoria, C. aurea, and C. floribunda represent one single species. The latter two species were retained as a variety of the former, C. tinctoria var. aurea and var. floribunda, respectively. Our results also show that in their currently accepted delimitation C. rugosiceps and C. tinctoria are polyphyletic, the former including one new species, C. volcanica, and the latter two new species, C. timida and C. tolteca. In addition, three other new species are described: two that have multicellular protuberances on the calyx and/or corolla lobes, C. iguanella and C. insolita, and one with broader that long calyx lobes, C. montana. A taxonomic treatment with an identification key, descriptions, and illustrations is provided.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 21669
  AU  - Costea,Mihai 
  AU  - Garcia,Ignacio 
  AU  - Docksteder,Kristy 
  AU  - Stefanovic,Sasa 
  T1  - More problems despite bigger flowers: systematics of Cuscuta tinctoria clade (subgenus Grammica, Convolvulaceae) with description of six new species
  PY  - 2013
  KW  - Australia
  KW  - Cuscuta
  KW  - dodders
  KW  - evolution
  KW  - floristics
  KW  - geographical distribution
  KW  - host range
  KW  - ITS
  KW  - morphology
  KW  - Mexico
  KW  - new species
  KW  - North and Central America
  KW  - parasitic
  KW  - phenology
  KW  - phylogeny
  KW  - taxonomy
  KW  - trnL-F
  UR  - http://dx.doi.org/
  N2  - Cuscuta tinctoria clade, the second largest infrageneric group of subg. Grammica, includes 14 species with Mexico and adjacent regions as a center of diversity, but also two species found in Australia presumably as a result of a long-distance dispersal event. Flowers, pollen, and stigmas are among the largest in Cuscuta, and plants are xenogamous or facultatively xenogamous. Perhaps more than in other major clades of subg. Grammica, the convergent evolution of some important morphological characters, for example of the calyx and gynoecium/capsule, has obscured identity of some species and has hindered previous efforts to determine their limits. Basic morphology, scanning electron microscopy and sequence data from the nuclear internal transcribed spacer (ITS) and the plastid trnL-F region were used to reconstruct the phylogeny, gain a better understanding of the evolutionary history, and determine species boundaries. Overall, species were grouped in five subclades. Based on their morphological and molecular similarly, C. tinctoria, C. aurea, and C. floribunda represent one single species. The latter two species were retained as a variety of the former, C. tinctoria var. aurea and var. floribunda, respectively. Our results also show that in their currently accepted delimitation C. rugosiceps and C. tinctoria are polyphyletic, the former including one new species, C. volcanica, and the latter two new species, C. timida and C. tolteca. In addition, three other new species are described: two that have multicellular protuberances on the calyx and/or corolla lobes, C. iguanella and C. insolita, and one with broader that long calyx lobes, C. montana. A taxonomic treatment with an identification key, descriptions, and illustrations is provided.
  L3  - 
  JF  - Systematic Botany
  VL  - 
  IS  - 
  ER  -