Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae)
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 (...
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Canadian Science Publishing
1988
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Online Access: | http://dx.doi.org/10.1139/b88-004 http://www.nrcresearchpress.com/doi/pdf/10.1139/b88-004 |
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crcansciencepubl:10.1139/b88-004 2023-12-17T10:51:35+01:00 Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) Downie, Stephen R. 1988 http://dx.doi.org/10.1139/b88-004 http://www.nrcresearchpress.com/doi/pdf/10.1139/b88-004 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 66, issue 1, page 24-39 ISSN 0008-4026 Plant Science journal-article 1988 crcansciencepubl https://doi.org/10.1139/b88-004 2023-11-19T13:39:38Z 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 angustifolia subsp. angustifolia is polymorphic and varied in ploidy level and foliar flavonoid chemistry. No significant differences were found among the means of 14 characters in plants collected from six broadly delimited geographic areas. Four cytotypes (2n = 38, 57, 76, and 95) and seven flavonoid glycosides (five flavonols and two flavones) were discerned. The aggregate is predominantly agamospermous with amphimictic phases in unglaciated Alaska and west central Yukon. Disjunct distributions are probably the result of survival in refugia during the late Wisconsinan. Article in Journal/Newspaper Alaska Yukon Canadian Science Publishing (via Crossref) Yukon Canadian Journal of Botany 66 1 24 39 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Plant Science |
spellingShingle |
Plant Science Downie, Stephen R. Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
topic_facet |
Plant Science |
description |
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 angustifolia subsp. angustifolia is polymorphic and varied in ploidy level and foliar flavonoid chemistry. No significant differences were found among the means of 14 characters in plants collected from six broadly delimited geographic areas. Four cytotypes (2n = 38, 57, 76, and 95) and seven flavonoid glycosides (five flavonols and two flavones) were discerned. The aggregate is predominantly agamospermous with amphimictic phases in unglaciated Alaska and west central Yukon. Disjunct distributions are probably the result of survival in refugia during the late Wisconsinan. |
format |
Article in Journal/Newspaper |
author |
Downie, Stephen R. |
author_facet |
Downie, Stephen R. |
author_sort |
Downie, Stephen R. |
title |
Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
title_short |
Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
title_full |
Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
title_fullStr |
Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
title_full_unstemmed |
Morphological, cytological, and flavonoid variability of the Arnica angustifolia aggregate (Asteraceae) |
title_sort |
morphological, cytological, and flavonoid variability of the arnica angustifolia aggregate (asteraceae) |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/b88-004 http://www.nrcresearchpress.com/doi/pdf/10.1139/b88-004 |
geographic |
Yukon |
geographic_facet |
Yukon |
genre |
Alaska Yukon |
genre_facet |
Alaska Yukon |
op_source |
Canadian Journal of Botany volume 66, issue 1, page 24-39 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b88-004 |
container_title |
Canadian Journal of Botany |
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66 |
container_issue |
1 |
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24 |
op_container_end_page |
39 |
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1785576897768325120 |