Frangula rubra

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  (Redirected from Rhamnus rubra)
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Frangula rubra
Rhamnus rubra Sierra coffeeberry close.JPG
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Rosales
Family: Rhamnaceae
Genus: Frangula
F. rubra
Binomial name
Frangula rubra
(Greene) Grubov

Rhamnus rubra Greene

Frangula rubra (syn. Rhamnus rubra) is a species of flowering plant in the buckthorn family known by the common names red buckthorn and Sierra coffeeberry.

Frangula rubra branch


It is native to the mountains and plateau areas of northern and eastern California and western Nevada, including the Sierra Nevada and Klamath Mountains, where it grows in many habitat types, including forests, chaparral, and sagebrush.


Black berry & pair of seeds

Frangula rubra is a spreading shrub approaching two meters in maximum height, its bark red or gray. The thin, deciduous leaves are generally oval in shape, green to grayish in color, and up to 8 centimeters long. The edges are smooth or faintly toothed. The inflorescence is an umbel of up to 15 flowers with five pointed sepals opening into a starlike shape and five smaller, greenish petals. The fruit is a drupe which ripens to black. It measures just over a centimeter long and contains 2 seeds.

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