butterfly weed

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butterfly weed

n.
A North American milkweed (Asclepias tuberosa) having showy clusters of usually bright orange flowers and a root that was formerly used in medicine. Also called pleurisy root.

pleurisy root

An herbal root which contains glycosides—e.g., asclepiadin, resins, volatile oil; it is antispasmodic, diaphoretic, expectorant, tonic, carminative and mildly cathartic, and has been used by herbalists for respiratory tract infections.
 
Toxicity
Fresh roots may cause vomiting and toxicity at high doses.
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(Family: Convolvulaceae) is a vinous plant with huge tuber roots. The plant resembles the morning glory plant and in English it is known as the Giant Potato.
Mature tuber roots of Ipomoea mauritiana were collected during December 2008 from Rangamati, Bangladesh, and identified at the Bangladesh National Herbarium at Dhaka prior to use.
Overall, it can be concluded that the results obtained in the present study validate the folk medicinal use of the tuber roots of this plant in weak heart conditions of patients.