Festuca inops and Festuca gracilior (Poaceae): Are they two different species?

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Abstract

According to current systematics, Festuca inops and F. gracilior are two distinct species. However, they are hardly distinguishable from each other on the basis of their morphological characters. Festuca inops is considered a diploid species endemic to Italy, while F. gracilior has a discontinuous distribution area, apparently related to chromosomal levels: diploid populations in Italy and south-east France, tetraploid populations in north-east Spain. The diploid populations of both taxa from Italy and south-east France are investigated in the present study. Nearly 1000 exsiccata were examined and morphometric analysis was carried out on macro- and micromorphological features of 119 specimens (including type-specimens) and on 20 natural populations (including loci classici). All these data showed that the two species should be referred to a single taxon, for which the rank of species seems to be appropriate. This result is supported by karyological, ecological and chorological data and was confirmed by the results of ISSR analysis. According to nomenclatural rules, the legitimate name for the species is Festuca inops De Not. © 2006 The Linnean Society of London.

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Foggi, B., Gherardi, M. E., Signorini, M. A., Rossi, G., & Bruschi, P. (2006). Festuca inops and Festuca gracilior (Poaceae): Are they two different species? Botanical Journal of the Linnean Society, 151(2), 239–258. https://doi.org/10.1111/j.1095-8339.2006.00496.x

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