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Thursday, October 29, 2015

Vinca rosea - endangered in the wild


Vinca rosea is a sub-shrub or herbaceous plant which grows up to one m tall. Its leaves are oval to oblong, 2.5–9 cm long and 1–3.5 cm broad, glossy green, hairless, with a pale midrib and a short petiole 1–1.8 cm long; they are arranged in opposite pairs.


The flowers of the plant are white to dark pink with a darker red centre, with a basal tube 2.5–3 cm long and a corolla .2–5 cm diameter with five petal-like lobes. The fruit is a pair of follicles 2–4 cm long and 3 mm broad.
Vinca rosea is considered as endangered in the wild. Basic cause of its position is the destruction of habitat, and destruction of habitat by slashes and burn habitation. This plant is widely cultivated in agriculture. It is also, however, widely cultivated and is naturalized in subtropical and tropical areas of the world.
This plant has long been cultivated as a herbal medicine    and also as an ornamental plant. In Indian traditional medicine the extracts of its roots and shoots is used with precaution against several diseases. The extract is used with caution as it is poisonous. In Chinese system of medicine the extract of the plant has been used against diabetes and Malaria. Principal plant alkaloids extracted from the plant are vinblastin and vincristine. If consumed orally by humans the plant extract is considered to be extremely toxic in nature.

Key Words:Vinca rosea white, extract, traditional Indian Medicine, vinblastin, vincristine.