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Petrobium

National Institutes of Health

Papers overview

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1988
1988
Generic relationships of Oparanthus and Petrobium, especially with reference to Bidens (Compositae, Heliantheae, Coreopsidinae)
Oparanthus with two species from the Tubuai Islands of the South Pacific Ocean and the monotypicPetrobium from St. Helena in the… 
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