The status of the genera Amphipappus, Amphiachyris, Greenella, Gutierrezia, Gymnosperma and Xanthocephalum (Compositae)
Solbrig, Otto T
Article
1960
Rhodora
62
43--54
BioStor
[Cambridge, Mass., etc.], New England Botanical Club [etc.],
BioStor: https://biostor.org/reference/139132
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