Cynanchum stauntonii

Botanical Name: Cynanchum stauntonii
Family:    Apocynaceae
Subfamily:Asclepiadoideae
Genus:    Cynanchum
Kingdom:    Plantae
Order:    Gentianales
Common Chinese Name :Bai Qian

Habitat :
These species are found worldwide in the tropics and subtropics. Several species also grow in temperate regions along water edges where it is shady and damp. Sunny places in moist woodland, water-logged lands at low to moderate elevations.

Description:
Cynanchum stauntonii  is a perennial  climbing  herb,erect half-shrub, high 30 ~ 60cm. Stems cylindrical, with thin edges. 6-13cm,width of .03-0.5cmLeaves opposite, lanceolate or linear-lanceolate, long 6 ~ 13cm, width of 0.3 ~ 0.5cm, ends acuminate, midrib apparent. Cymes axillary, 3 to 8 flowers; Calyx 5 parted; Corolla purple, radial, inner surface is pilose, lobes narrowly triangular; Vice corolla lobes peltate, apex slightly thicker and the inner volume; stamens 5, and co-generation core column pistil, anther 2 rooms; stigma convex, including the films in the anther.  Fruit solitary follicles. Flowering 5 to 8 months, the fruit of 9 to 10 months
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Slender cylindrical roots, branching, slightly curved, long 4 ~ 15cm, diameter of 1.5 ~ 4mm; surface yellow-white or yellowish brown, for length of 1.5 ~ 4.5cm, the top of a residual stem; crisp, hollow cross section. Tufted slender curved section at the root, long up to 10cm, diameter of less than 1mm, there was hair to be like many branches, often twisting into the group. Gas micro, slightly sweet taste.

Cultivation:
We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it could succeed outdoors in many parts of this country. It probably does not have any special cultivation requirements and will probably succeed in most soils in a sunny position.

Propagation:
Seed – sow spring in the greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Division in spring.

Medicinal Uses:
The dried root, decocted with other herbs, is anodyne, antitussive and expectorant. A decoction of the root is used in the treatment of coughs and asthma. Decoctions of all parts are used as a febrifuge and for treating internal fever. The roots are used medicinally for pulmonary tuber-culosis, infantile malnutrition due to intestinal parasites, influenza, cough, and chronic bronchitis.

Known Hazards:  There are some reports of toxins in this genus

Disclaimer:
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.

Resources:
http://www.answers.com/topic/cynanchum
http://www.herbnet.com/Herb%20Uses_AB.htm
http://tool.zyy123.com/zybbg/ht/bq.htm
http://www.pfaf.org/user/Plant.aspx?LatinName=Cynanchum+stauntonii

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