Title
Helianthus laetiflorus and Helianthus rigidus: Hybrids or species?
By
Clevenger, Sarah
Heiser, Charles Bixler 1920-2010
Type
Article
Date of Publication
1963
Original Publication
Rhodora
Volume
65
Pages
121--133
Contributed by
Published by
[Cambridge, Mass., etc.] New England Botanical Club [etc.]
Identifiers
BioStor:
https://biostor.org/reference/139011