Evaluation of the taxonomic status of Antennaria bayardi , Antennaria brunnescens , and Antennaria foggii (Asteraceae : Inuleae)
Classificatory discriminant analysis was used as an analytical technique not only to classify specimens of Antennaria gaspensis, Antennaria isolepis, Antennaria media, Antennaria pulvinata, Antennaria rosea, and Antennaria umbrinella but also to define and to evaluate the classification criterion. T...
| Published in: | Canadian Journal of Botany |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | French |
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Canadian Science Publishing
1994
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| Online Access: | http://dx.doi.org/10.1139/b94-218 http://www.nrcresearchpress.com/doi/pdf/10.1139/b94-218 |
| Summary: | Classificatory discriminant analysis was used as an analytical technique not only to classify specimens of Antennaria gaspensis, Antennaria isolepis, Antennaria media, Antennaria pulvinata, Antennaria rosea, and Antennaria umbrinella but also to define and to evaluate the classification criterion. The classification criterion was subsequently used to identify collections of Antennaria bayardi, Antennaria brunnescens, and Antennaria foggii with one of the previously defined species. The latter species were consistently classified to the western Rocky Mountain species A. pulvinata. The disjunct Newfoundland populations of A. pulvinata represent in part the polyploid, apomictic component of this typically western species. The eastward migration of A. pulvinata probably occurred during the Wisconsonian glacial period. Population numbers of A. pulvinata in Newfoundland support the recognition of the species as threatened. Habitat destruction is the single most important factor threatening the survival of this species in Newfoundland. Key words: Antennaria pulvinata, Asteraceae, Newfoundland, disjuncts, limestone. |
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