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Citation for Study 145

Citation title: "Nassella (Gramineae, Stipeae): Revised interpretation and nomenclatural changes.".

This study was previously identified under the legacy study ID S1x28x96c17c02c33 (Status: Published).

Citation

Barkworth M. 1990. Nassella (Gramineae, Stipeae): Revised interpretation and nomenclatural changes. Taxon, 39: 597-614.

Authors

• Barkworth M.

Abstract

The taxonomic history of Nassella Desv. is reviewed and its circumscription expanded to include all species of Stipeae with strongly overlapping lemma margins; lemma apices that are fused into a crown; paleas that are highly reduced, ecostate, and glabrous; long epiblasts; and lemma epidermes with very short fundamental cells having silicified cell walls. The expanded genus includes 79 species, almost all of which are South American. Piptochaetium and Stipa sect. Hesperostipa are suggested as the closest extant relatives. Synapomorphies of the three taxa are: brownish callus hairs; fused lemma apices; bulbous-based lemma cilia; silicified lemma fundamental cells; and long epiblasts. A key to putatively monophyletic groups in American Stipeae and a synopsis of Nassella s.l., involving more than 60 new combinations, are presented. The transferred species include representatives from seven subgenera of Stipa L. described by Spegazzini.

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S145
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref14664,
  	 author = {Mary E.  Barkworth},
  	 title = {Nassella (Gramineae, Stipeae): Revised interpretation and nomenclatural changes.},
  	 year = {1990},
  	 keywords = {},
  	 doi = {},
  	 url = {},
  	 pmid = {},
  	 journal = {Taxon},
  	 volume = {39},
  	 number = {},
  	 pages = {597--614},
  	 abstract = {The taxonomic history of Nassella Desv. is reviewed and its circumscription expanded to include all species of Stipeae with strongly overlapping lemma margins; lemma apices that are fused into a crown; paleas that are highly reduced, ecostate, and glabrous; long epiblasts; and lemma epidermes with very short fundamental cells having silicified cell walls. The expanded genus includes 79 species, almost all of which are South American. Piptochaetium and Stipa sect. Hesperostipa are suggested as the closest extant relatives. Synapomorphies of the three taxa are: brownish callus hairs; fused lemma apices; bulbous-based lemma cilia; silicified lemma fundamental cells; and long epiblasts. A key to putatively monophyletic groups in American Stipeae and a synopsis of Nassella s.l., involving more than 60 new combinations, are presented. The transferred species include representatives from seven subgenera of Stipa L. described by Spegazzini.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 14664
  AU  - Barkworth,Mary E. 
  T1  - Nassella (Gramineae, Stipeae): Revised interpretation and nomenclatural changes.
  PY  - 1990
  UR  - 
  N2  - The taxonomic history of Nassella Desv. is reviewed and its circumscription expanded to include all species of Stipeae with strongly overlapping lemma margins; lemma apices that are fused into a crown; paleas that are highly reduced, ecostate, and glabrous; long epiblasts; and lemma epidermes with very short fundamental cells having silicified cell walls. The expanded genus includes 79 species, almost all of which are South American. Piptochaetium and Stipa sect. Hesperostipa are suggested as the closest extant relatives. Synapomorphies of the three taxa are: brownish callus hairs; fused lemma apices; bulbous-based lemma cilia; silicified lemma fundamental cells; and long epiblasts. A key to putatively monophyletic groups in American Stipeae and a synopsis of Nassella s.l., involving more than 60 new combinations, are presented. The transferred species include representatives from seven subgenera of Stipa L. described by Spegazzini.
  L3  - 
  JF  - Taxon
  VL  - 39
  IS  - 
  SP  - 597
  EP  - 614
  ER  -