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1 June 2013 Taxonomic Revision of the Eurasian Stipa Subsections Stipa and Tirsae (Poaceae)
Raúl Gonzalo, Carlos Aedo, Miguel Ángel García
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Abstract

A comprehensive taxonomic revision of Stipa subsects. Stipa and Tirsae is presented. We analyzed the pattern of morphological variation of the taxa included in both subsections through the study of 1353 vouchers from 27 herbaria. Variation in floral and leaf morphology was further explored to revaluate taxon limits in 165 specimens using univariate analyses (Anova, Tukey test and, χ2 test), and multivariate tests (principal components analysis and discriminant analysis). We found that one species of subsect. Tirsae plus three species and five subspecies of subsect. Stipa can be distinguished based on morphological characters. For each taxon, we present a dichotomous key, a list of synonyms, detailed morphometric descriptions, illustrations, and distribution maps. In addition, neotypes are proposed for S. pulcherrima var. mollis (subsection Stipa) and S. aperta (subsection Stipa), and a lectotype is proposed for S. cerariorum (subsection Tirsae). Likewise, two new combinations are proposed: Stipa subsection Tirsae (Martinovský) R. Gonzalo, and Stipa turkestanica subspecies macroglossa (P.A Smirn.) R. Gonzalo.

© 2013 by the American Society of Plant Taxonomists
Raúl Gonzalo, Carlos Aedo, and Miguel Ángel García "Taxonomic Revision of the Eurasian Stipa Subsections Stipa and Tirsae (Poaceae)," Systematic Botany 38(2), 344-378, (1 June 2013). https://doi.org/10.1600/036364413X666615
Published: 1 June 2013
JOURNAL ARTICLE
35 PAGES


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KEYWORDS
Asia
Europe
multivariate analyses
Stipa pennata
Stipa tirsa
taxonomy
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