Contribution to the biosystematic and ecological study of the orophilous carex sempervirens vill. complex cyperaceae taxonomical history karyology and reproductive biology

Lazare, J.J.

Lejeunia 126: 1-46


ISSN/ISBN: 0457-4184
Accession: 007157752

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A multidisciplinary biosytematic and ecological investigation (morphological, kacryological, genetic, biochemical, ecophysiological, phytosociological and chorological) of the Carex sempervirens VILL. s.l. populations from European mountains (Cordillera Canatabrica, Pyrenees, Jura, Alps, Apuan Alps, Apemnines, Balkans, Tatras and Carpathians) has been effected. A good concordance between the results of the different approaches is obtained. Three European taxa are retained: C. sempervirens subsp. sempervirens, with 2n = 30 chromosomes, present in the whole of the area, C. sempervirens subsp. pseudotristis, with 2n = 34, in the Pyrenees, the Tatras and the Carpathians, and C. bulgarica, with 2n = 34, endemic of the Balkans. The acidiphilous populations from the maritime and ligurian Alps appear intermediate between the first two taxa. The contribution presents straightway the evolution of the complex nomenclature since the description of C. sempervirens made in 1787 by VILLARS, then the caryological data and finally the study of the reproduction biology (sex expression , allogamy, experimental breedings).