Clematis ligusticifolia (western white clematis) is a climbing vine with showy flowers. It is native to North America where it is widespread across the western United States in streamside thickets, wooded hillsides, and coniferous forests up to 4,000 feet.
Clematis ligusticifolia, or commonly known as western white clematis, pepper vine, hierba de chivo, old-man's-beard, and virgin's-bower, is a climbing vine that produces small white flowers. It is part of the Ranunculaceae family and the genus Clematis. The leaves of the western white clematis are pinnately compound. They have around 5-7 leaflets. It has a multiple stem growth form and the stems are strong and semi-woody, growing 15- 20 feet long. The female flower has both pistil and interfile stamen while the male flower only has stamen. The sepals of this flower are white, oval-lanceolate shape. It's fruits are delicate, fluffy achenes. The seeds of the western white clematis ripen from September to October.
The western white clematis grows throughout western North America. It also can be found in British Columbia and the west side of southern Washington and Oregon, as well as in California, Nevada, Idaho, Montana, Wyoming, Nebraska, Utah, Arizona, Texas and New Mexico. Popular native areas for this plant are New Mexico, Arizona, Texas. This plant can be found in the grey sage desert, among yellow pine, along creek bottoms (water), lakeshores, and in various forests and Ponderosa Pine Forest. It likes part shade and water and often occurs in wetland areas. They have a hard time growing in disturbed environments also because the plant is not able to grow through harsh conditions (flood, fire, tsunami, etc.).
This plant usually attracts birds, hummingbirds, bee and butterflies. Birds use the bud and sepal of the plant as a cover for their nest. The silky seed is also the perfect tool to build the network. Insects usually build their net on the surface of the leaf. Bees prefer to pollinate on the oval part of the flower.
White western clematis is also known as the “pepper vine". People used this name in reference to the bitter, peppery taste of the stem and leaves. Native people chewed this plant as a treatment for sore throat and cold. The stem part was also used for making bags and bowstrings. A poultice of this plant has been used to treat wounds, bruises, swelling, painful joints, chest pain, and backache. The root parts have been used for shampoos. There are even reports of the mashed roots applied to horse nostrils to wake up the animals.
There is no toxic damage report of this species, but its genus has a high hazard level. Some species in this genus can cause mouth pain if eaten, causing a burning sensation and even ulcers. It can also cause a burning sensation and redness of the skin.
Student author(s)*: Linh Chi (11th grade) from Menaul School
*The entries in this field guide have been edited by Yerba Mansa Project staff to ensure that they contain quality, fact-checked content and standardized formatting. https://yerbamansaproject.org/
Type | herbaceous, vine |
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Uses | medicinal, pollinator |
Color | white |