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Support the Flora of the Southeastern US

2024 has been a banner year for making the best flora we can imagine. We've created:
With financial support from people like you, we are aiming even higher in 2025. Together we can accomplish all this: Vote on our 2025 priorities
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  • Image overlays highlighting diagnostic characters with arrows vote
  • iNaturalist integration in FloraQuest vote
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*Rhamnus Linnaeus. Buckthorn.

Key to Rhamnus

A genus of ca. 150 species, trees and shrubs, of the northern hemisphere. The recognition of Frangula as separate from Rhamnus is supported by molecular phylogeny (Bolmgren & Oxelman 2004).

Ref: Bolmgren & Oxelman (2004); Brizicky (1964a); Hauenschild et al. (2016b); Johnston (1975); Medan & Schirarend In Kubitzki et al. (2004); Nesom & Sawyer (2016) In Flora of North America Editorial Committee (2016). Show full citations.

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Show species in Rhamnus

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Erik Danielson | Rhamnus cathartica source | Original Image ⭷
image of plant© Derek, some rights reserved (CC BY), uploaded by Derek | Rhamnus utilis source | Original Image ⭷
image of plant© Gary P. Fleming | Rhamnus davurica | Original Image ⭷

Feedback

See something wrong or missing on about Rhamnus? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.