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Phytosociological features of Sesleria calabrica (Poaceae), an endemic species to Pollino-Orsomarso mountains (southern Italy)
Full text linkSesleria calabrica (Deyl) Di Pietro is a species belonging to the collective group of S. juncifolia s.l. which has been described recently for southern Italy where it is restricted to the Pollino-Orsomarso massifs. In this area S. calabrica is widespread between 1200 and 2280 m a.s.l where it is the dominant species in two grassland types, Jurineo mollis-Seslerietum calabricae ass. nov. (lower montane belt) and Anthyllido atropurpureae-Seslerietum calabricae ass. nov. (subalpine belt) which belong respectively to Festuco-Brometea and Elyno-Seslerietea classes. The presence of a southern Italy endemic sub-alliance of Seslerion apenninae is hypothesised
La componente orientale nella vegetazione forestale del Lazio: caratterizzazione fitosociologica successiva al lavoro di Giuliano Montelucci.
No full textTaxonomical features of Sesleria calabrica (Poaceae), a neglected species from southern Italy.
Full text linkA taxonomic study of the Sesleria juncifolia complex in the Italian Peninsula is presented, with a focus on southern Italian populations here named as Sesleria calabrica (DEYL) DI PIETRO comb. nov. et stat. nov. Karyological, morphological and anatomical characters were used for comparative analyses with populations of closely related species, such as S. juncifolia SUFFREN and Sesleria apennina UJHELYI occurring in the Italian Peninsula. Multivariate and univariate morphometric analyses, and qualitative morphological characters showed a distinct position of S. calabrica. Populations of S. calabrica differ in respect to various morphological characters of leaf and spikelet, such as the glume, lemma and palea length, stem length, the leaf sheath, leaf width, leaf thickness, and the total number of vascular bundles. Furthermore, previous karyological studies demonstrated that all the populations of both S. juncifolia and S. apennina examined are octoploid (2n=8x=56), whereas S. calabrica was found to be dodecaploid (2n=12x=84). S. calabrica is strictly confined to the Pollino massif and the Orsomarso mountains in southern Italy, which represent the southernmost limit of the Sesleria juncifolia complex distribution area both in Italy and in Europe. In addition to S. juncifolia and S. calabrica, the recognition of S. apennina as a taxon distinct from S. juncifolia is supported, at least for the area of the Apuan Alps
Segnalazioni floristiche italiane: (730), Physospermum verticillatum (W. et K.) Vis , seconda segnalazione per il Lazio.
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