Nat. ord, Asclepiadaceae.
This plant is indigenous to the United States; most abundant in the southern States.
From the- large, irregularly tuberous, branched, and fleshy perennial root arise numerous erect or procumbent hairy stems, about 3 feet in height. The very handsome, reddish-orange-coloured flowers are disposed in terminal or lateral corymbose umbels.
The fresh root has a subacrid, nauseous taste; the dried root is bitter.