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  • Helianthus annuus f. silvester Thell.

This is a synonym of Helianthus annuus L.

Helianthus annuus f. silvester Thell. appears in other Kew resources:

First published in Vierteljahrsschr. Naturf. Ges. Zürich 64: 799 (1919)

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
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