Genus
Frangula (False-buckthorns)
Frangula purshiana. Photo: (c) Noah Strycker, some rights reserved (CC BY-NC)
Frangula is a genus of about 35 species of flowering shrubs or small trees, commonly known as alder buckthorn in the buckthorn family Rhamnaceae. The common name buckthorn is also used to describe species of the genus Rhamnus in the same family and also sea-buckthorn, Hippophae rhamnoides in the Elaeagnaceae.
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