Asclepias incarnata.

Botanical name: 

This variety of the Asclepias is said to possess properties similar to the others, though in large doses it acts as an emetic and cathartic. Its properties and therapeutic application have not been properly investigated. Tongo and Durand, in their Manual of Materia Medica, include it with the Syriaca, and say they are used with success in the same doses, and in the same manner as the Tuberosa, in pectoral affections, etc. Dr. Tully states that the root of this species may be advantageously administered in catarrh, asthma, rheumatism, syphilis, and verminous affections.

The American Eclectic Materia Medica and Therapeutics, 1898, was written by John M. Scudder, M.D.