Natural Hybridization in the Genus Cirsium-I. C. discolor (Muhl. Ex Willd.) Spreng X C. Muticum Michx
- 1 May 1951
- journal article
- Published by JSTOR in Bulletin of the Torrey Botanical Club
- Vol. 78 (3) , 233
- https://doi.org/10.2307/2481979
Abstract
1. Natural hybridization between species of North American thistles apparently first was postulated by Asa Gray about seventy-five years ago. Subsequent authors...Keywords
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