Hybridization Between the Sunflower Species Helianthus annuus and H. petiolaris
- 1 December 1947
- journal article
- Published by Oxford University Press (OUP) in Evolution
- Vol. 1 (4) , 249
- https://doi.org/10.2307/2405326
Abstract
The sunflower species Helianthus annuus and H. petiolaris are widespread weeds in North America. Most botanists have held that the two species are indigenous to...Keywords
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