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Sword-Leaf Dogbane
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Sword-Leaf Dogbane
P Native Photo: Sonam Tamchos
Common name: Sword-Leaf Dogbane
Botanical name: Apocynum venetum    Family: Apocynaceae (Oleander family)
Synonyms: Poacynum venetum, Trachomitum venetum

Sword-Leaf Dogbane is a perennial herb, with slender stem, 3-5 ft hairless and circular rarely upper portion softly hairy. Flowers are borne in a few to many flowered nearly corymb-like cymes, carried on flower-cluster-stalk 2-4 cm, hairless. Flowers are small, 3-4 mm across, purplish; flower-stalk thread-like, 2-3 mm long, velvet-hairy. Petals are ovate-oblong about 2 mm long. Sepal-cup-tube short; sepals lanceshaped, pointed, about 2 mm long. Flowers are 4-6 mm long, bell-shaped. Anthers are 2.5 mm long, arrow shaped, connective elongated, membranous, style very short. Leaves are linear, ovate-elliptic, oblong or lanceshaped, 2-5 x 0.5-2, cm, hairless or minutely bristly on the nerves beneath, entire or rounded toothed, tip blunt, with a short sharp point or pointed, base round; leaf-stalk upto 5 mm long. Seed-pods are 2 about 15 cm long and 3-4 mm broad. Sword-Leaf Dogbane is native to S. Central Europe to Temperate Asia.
Medicinal uses: Sword-Leaf Dogbane leaves have been used in the traditional medicine for hypertension treatment. It has a long history as a Chinese traditional medicine with uses to calm the liver, soothe the nerves, dissipate heat, and promote diuresis. Recently, Luobuma tea has been commercialized as a sedative and anti-aging supplement that has become increasingly popular in North American and East Asian health food markets.

Identification credit: Sonam Tamchos Photographed in Ladakh.

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