Clematis orientalis

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Clematis orientalis
Clematis orientalis (dessin).jpg
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Genus: Clematis
Species:
C. orientalis
Binomial name
Clematis orientalis
L.

Clematis orientalis is a deciduous vine or scrambling shrub in the buttercup family Ranunculaceae, that originates from Asia and Central Europe. It was brought to the United States as an ornamental plant but escaped cultivation leading to its classification as a noxious weed in some states. Common names for C. orientalis include Chinese clematis, Oriental virginsbower, orange peel, and orange peel clematis. [1]

Contents

Etymology

The name of the genus Clematis is a derivation of the Ancient Greek word "clématis", which means "climbing". This is a description of the tendency that species show to be climbers.

Description

Clematis orientalis mature flower: yellow sepals curled back Clematis orientalis; Baikonur 03.jpg
Clematis orientalis mature flower: yellow sepals curled back

Clematis orientalis is a deciduous scrambling shrub that grows to attach to its environment by means of tendril-like stems. [2] It grows densely at a rate of least a meter per year. [2]

Stem

The stems are slender and tendril-like. It grows to heights of about 2–8 meters, with a thickness up to 7 cm. The stems are covered with gray-brown bark, with the inner bark being green. [1] The vines twine to rocks, other plants, and other things in its environment as it climbs.

Flower

C. orientalis flowers can be solitary or grow in clusters in a cyme inflorescence. Most noticeable about the flower is the four yellow to yellow-orange sepals, which are often mistaken for its petals. The sepals are ovate-lanceolate to elliptic, wide-spreading and tend to curl back at its maturity. The sepals reaches widths of 2–3 cm and lengths of 6–9 cm. [3] No hair abaxial of sepal. [1] The flower is hermaphroditic. The style is 3–10 cm long and remains attached to the achene, acting as its wings. The flower has a strong fragrance.

Clematis orientalis seedhead Clematis orientalis; Baikonur 02.jpg
Clematis orientalis seedhead

Leaf

The leaves are pinnately compound, with 3 to 7 leaflets per leaf. The leaflets are coarsely-toothed to entire or ovate to linear-lanceolate and 1–5 cm long. The leaves have a gray-green color. [1] The leaves have an opposite arrangement on the stem.

Root

C. orientalis roots are weak and flexible with branching finer roots of tan to orange-tan coloring. [1]

Ecology

Clematis orientalis prefers well-drained soils. There is no preference of soil texture though does well on chalky soil. Can tolerate a range of alkaline or acidic soils. [4]

It has a preference for sunny habitats but has shown a tolerance for partially shaded areas. In the United States, it is found in shrublands, riverbanks, gullies, sand depressions, riparian forests in hot, dry valleys and desert and semidesert areas. [1] It can grow at elevations of 400 to 3,800 meters. [1]

Distribution

Distribution of Clematis orientalis in the United States and Canada USDA Distribution - Clematis orientalis.png
Distribution of Clematis orientalis in the United States and Canada

Clematis orientalis is native to Asia and Central Europe, specifically from Turkey through West Asia to the Korean Peninsula, south to Iran, and Northwest India. [1]

Originally planted in the United States as an ornamental plant, it escaped from cultivation and became naturalized to Nevada, Idaho, Utah, Colorado, New Mexico, Oregon, and Ontario (Canada). [2]

Reproduction

Multiple Clematis orientalis seedheads Clematis orientalis; Baikonur 01.jpg
Multiple Clematis orientalis seedheads

C. orientalis flowers appear from August to late September. The flowers and fruits are present at the same time. Pollination is carried out by flies and bees. [1]

Seedheads are rounded clusters of fluffy winged seeds, resembling pom poms that disperse over winter and early spring. [2] The seeds are primarily dispersed by the wind.

Impact on habitat

Since C. orientalis is a vine, it grows over rocks, fences, and other plants. It has escaped cultivation and naturalized. It is classified as a noxious weed by some states. C. orientalis can cover young trees and bushes, killing them. It has the ability to out-compete native shrubby or herbaceous species. [4]

Uses

Clematis orientalis is grown as an ornamental plant. It is also used as an antiseptic and refrigerant. This plant has been documented in Ancient Chinese medicine to treat dog bites and to treat ulcerated throats by gargling its infusion. [5]

Related Research Articles

Vine Plant with a growth habit of trailing or scandent (that is, climbing) stems or runners

A vine is any plant with a growth habit of trailing or scandent stems, lianas or runners. The word vine can also refer to such stems or runners themselves, for instance, when used in wicker work.

<i>Clematis</i> Genus of climbing perennial flowering plants in the buttercup family Ranunculaceae

Clematis is a genus of about 300 species within the buttercup family, Ranunculaceae. Their garden hybrids have been popular among gardeners, beginning with Clematis × jackmanii, a garden standby since 1862; more hybrid cultivars are being produced constantly. They are mainly of Chinese and Japanese origin. Most species are known as clematis in English, while some are also known as traveller's joy, a name invented for the sole British native, C. vitalba, by the herbalist John Gerard; virgin's bower for C. terniflora, C. virginiana, and C. viticella; old man's beard, applied to several with prominent seedheads; leather flower for those with fleshy petals; or vase vine for the North American Clematis viorna.

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References

  1. 1 2 3 4 5 6 7 8 9 Francis, Frank K. United States. U.S. Department of Agriculture, Forest Service. Clematis orientalis L.. Web. <http://www.fs.fed.us/global/iitf/pdf/shrubs/Clematis orientalis.pdf>.
  2. 1 2 3 4 King County (2012). "Noxious Weeds: Oriental clematis".[ permanent dead link ]
  3. Riedl, Harald, and Yasin J. Nasir. "Flora of Pakistan." EFloras. N.p., n.d. Web. 28 Apr 2012. <http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=200007697>.
  4. 1 2 Colorado. Colorado Department of Agriculture. Chinese Clematis. Web. <http://www.colorado.gov/cs/Satellite?blobcol=urldata&blobheader=application/pdf&blobkey=id&blobtable=MungoBlobs&blobwhere=1191392899595&ssbinary=true Archived 2013-04-12 at the Wayback Machine >.
  5. ."Clematis orientalis – L.." Plants For A Future . N.p., n.d. Web. 28 Apr 2012. <http://www.pfaf.org/user/Plant.aspx?LatinName=Clematis orientalis>.