Morphometric analysis of Dactylorhiza occitanica and related populations from eastern France (Orchidaceae)
(1999) Bulletin de la Société Royale de Botanique de Belgique — Vol. 132, n° 2, p. 158-174 (1999)
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- Abstract
- Morphometric examination and multivariate statistical analyses have been applied for the study of five populations of Dactylorhiza occitanica Geniez, Melki, Pain & Socca, a recently described taxon from lowland areas in southern France, as well as four critical Dactylorhiza populations from mountainous regions in eastern France. The homogeneity of D. occitanica as an independent species within the D. majalis group was substantiated, although one of the samples showed some divergence, probably induced by isolation and ecological conditions. The resemblance and segregation of D. occitanica from allied species such as D. praetermissa and D. elata is discussed, as well as the probable hybridogenous influences that characterize all members of the group. The four critical populations are discussed in the same perspective. Although they show some resemblance with either D. praetermissa or D. occitanica, they are not attributable to them and probably resulted from independent hybridization events under peculiar conditions of isolation. Especially in one case (Chaffois, Doubs), these populations may be the departure point for the establishment of separate, well defined species.
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Tyteca, D., & Gathoye, J.-L. (1999). Morphometric analysis of Dactylorhiza occitanica and related populations from eastern France (Orchidaceae). Bulletin de la Société Royale de Botanique de Belgique, 132(2), 158-174. https://hdl.handle.net/2078.5/139939 (Original work published 1999)