Rhus trilobata

subsp. var.
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Standard Cyclopedia of Horticulture

Rhus trilobata, Nutt. (Schmaltzia trilobata, Small). Skunk-bush. Ill-scented Sumac. Offensive-scented shrub, to 3, rarely to 6 ft. high: lvs. petioled, 1-2 in. long; lfts. sessile or nearly so, oval or obovate, obtuse, crenately toothed, puberulous while young, soon glabrous, the terminal one usually 3-lobed: fls. greenish, in clustered spikes before the lvs.: fr. subglobose, red, hairy, 1/4in. across. Mo. to Wash., Calif., and Texas. B.B. (ed. 2) 2:483. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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Green berries
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Scientific classification
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Binomial name
Rhus trilobata Nutt.
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The North American sumac Rhus trilobata has the common names sourberry and skunkbush. It is native to the western half of Canada and the United States and extends south into northern Mexico. It can be found from deserts to mountain peaks up to about 7,000 feet in elevation.

Skunkbush sumac grows in many types of plant communities, such as the grasslands east of the Rocky Mountains, mountainous shrubland, pine, juniper, and fir forests, wetlands, oak woodlands, and chaparral. The plant is destroyed above ground by wildfire but rarely killed, and will readily sprout back up in burned areas. It is sometimes planted for erosion control and landscaping, and is a plant used for reclaiming barren land stripped by mining.

The foliage has a very strong scent. The aroma is medicinal or bitter, disagreeable enough to some to have gained the plant the name skunkbush. At first glance the plant resembles poison oak due to the three leaflets on each leaf. They are green when new and turn orange and brown in the fall. The twigs are fuzzy when new, and turn sleek with age. They blossom into white or light yellow flowers. The plant yields sticky berries which have an aroma similar to limes. The berries are sour but edible. They can be baked into bread or mixed into porridge or soup, or steeped to make a tea or tart beverage similar to lemonade. The acidity comes from tannic and gallic acids. The flowers are animal-pollinated and the seeds are dispersed by animals that eat the berries. The shrub also reproduces vegetatively, sending up sprouts several meters away and forming thickets.

The skunkbush sumac has historically been used for medicinal and other purposes. The bark has been chewed or brewed into a drink for cold symptoms, the berries eaten for gastrointestinal complaints and toothache, and the leaves and roots boiled and eaten for many complaints. The leaves have also been smoked. The flexible branches were useful and sought after for twisting into basketry and rugs.

External links

• USDA Plants Profile
• Medicinal plants
• Forest Service Info Page

References

Casebeer, M. (2004). Discover California Shrubs. Sonora, California: Hooker Press. ISBN 0-9665463-1-8