Contractions. - Apoc. Can. Apo.
Nat. ord., Apocynaceae.
Synonym. - Apocyuum pubescens.
Fig. - Hooker, Flor. Bot. Amer., tab. cxxxix.
Dogsbane, American Indian Hemp.
Habitat. - Canada and United States.
Part employed. - The fresh root.
Characters. - It is a perennial plant. Stems herbaceous, erect, branching, of a brown colour, and 2 or 3 feet in height. Leaves opposite, ovate, oblong, acute at both ends, and somewhat downy beneath. Cymes pedunculate, many-flowered and pubescent. Corolla small and greenish, with a tube not longer than the calyx, and with an erect border. Pod or follicle from 3 to 5 inches long, and resembles the pods of the Asclepias syriaca, or common silk-weed, but is much smaller. Root horizontal, 5 or 6 feet in length, about one-third of an inch thick, dividing near the end into branches which terminate abruptly; of a yellowish-brown colour when young, but dark chestnut when old; of a strong odour, and a nauseous, somewhat acrid, and permanently bitter taste.
Preparation. - Tincture, corresponding in alcoholic strength with proof spirit.
Reference to Horn. Proving. - Hale's New Remedies.
Proper forms for dispensing. -φ and lx, Tincture only. 1 and upwards, Tincture, Pilules, or Globules.
As the plant is not indigenous to this country, the tincture imported from North America must be used.