Abstract
Forty-two anatomical and exomorphological characters from 16 species and 2 varieties of Festuca native from Patagonia were numerically analyzed. Principal components analysis together with cluster analysis arranged 14 taxa into 5 groups (F. tunicata and F. acanthophylla, group 1; F. monticola, F. thermarum, and F. scabriuscula, group 2; F. pallescens, F. p. var. scabra, and F. kurtziana, group 3; F. gracillima and F. ventanicola, group 4; and F. contracta, F. rubra var. simpliciuscula, F. pyrogea, and F. magellanica, group 5; F. argentina, F. purpurascens, F. cirrosa and F. pampeana were not included in any of the groups). Cluster analyses performed on either vegetative or reproductive characters showed that they alone are not enough to summarize variation among these taxa.
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