Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae)

@article{Downie1988MorphologicalCA,
  title={Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae)},
  author={S. Downie},
  journal={Botany},
  year={1988},
  volume={66},
  pages={24-39}
}
The Arnica angustifolia aggregate is a circumpolar taxon previously consisting of a number of geographically distinct infra-specific taxa. Cluster and principal component analyses of 99 populations revealed the aggregate to be best represented by two subspecies: A. angustifolia subsp. angustifolia (a combination of the previously recognized subspecies angustifolia, attenuata, sornborgeri, intermedia, iljinii, and alpina and A. plantaginea) and A. angustifolia subsp. tomentosa. Arnica… Expand
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