The bio systematic study of the orophil complex carex sempervirens cyperaceae in the pyrenees france

Lazare J J.

Bulletin de la Societe Neuchateloise des Sciences Naturelles 105: 39-57


Accession: 006607138

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C. sempervirens Vill. (Cyperaceae) has 2 ssp. in the Pyrenees, sempervirens and granitica (Br.-Bl.) C. Vicioso, which may be unambiguously distinguished by karyological, morphological and ecological characters. The ssp. sempervirens has 2n = 30 chromosomes and grows upon carbonate substrata and neutral and basic soils, while the ssp. granitica with 2n = 34 chromosomes is acidiphilous. The best morphological character is the distribution of stomata. These occur on both sides of leaves in ssp. granitica and only on the lower side of leaves in ssp. sempervirens. The taxonomy and the differentiation of these taxa are discussed.