Rhus trilobata

Plant Characteristics

Habit		shrub

Cultivation

Scientific Names

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Rhus trilobata is a shrub in the sumac genus (Rhus) with the common names sourberry, skunkbush, and three-leaf sumac. 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.

This species closely resembles other members of the genus that have leaves with three "leaflets" ("trifoliate" leaves). These include Rhus aromatica, native to eastern North America, and western Poison-oak. The shape of the leaflets and the habit of the shrub make this species, like some other Rhus, resemble small-leafed oaks (Quercus).

The leaves have a very strong scent when crushed. The aroma is medicinal or bitter, disagreeable enough to some to have gained the plant the name skunkbush. The leaves are green when new and turn orange and brown in the fall. The twigs are fuzzy when new, and turn sleek with age. The flowers, borne on small catkins ("short shoots"), are white or light yellow. Edible fruit, the plant yields hairy and slightly sticky red berries which have an aroma similar to limes and a very sour taste. 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.

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 but rarely killed by wildfire, and will readily sprout back up in burned areas.

Read about Rhus trilobata in the 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. 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 It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article.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.

Cultivation

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References

• Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

External links

• w:Rhus trilobata. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
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