Abuhab-baging is a stout, smooth, woody vine which , when young, may be erect and shrub-like. Leaves are elliptic-ovate, 8 to 15 centimeters long, and slightly pointed at the base, with a short point at the tip. Inflorescences are terminal, smooth, and few-flowered. Calyx lobes are slender and 7 to 9 millimeters long. Corolla is very characteristic; the tube is white, about 2 centimeters long with lobes which are about 8 millimeters wide at the base and continuing into long, slender and drooping tips. Lobes are about 1 centimeters long. Fruit is a double follicle. Follicle is woody, oblong-ovoid, about 16 centimeters long and 7 centimeters in diameter, containing numerous, elongated seeds, each of which terminates in very long projections with numerous long hairs.
Found in thickets and forests at low and medium altitudes in Cagayan, Abra, Ilocos Norte, La Union, Batangas, Rizal, Cavite, Bataan, Laguna, and Sorsogon Provinces in Luzon; and in Palawan, Leyte, Negros and Mindanao.
- Seeds, like that of other species of the genus Strophanthus, yield the glucoside, strophanthin.
- Strophanthin is a digitalis glucoside used as a heart stimulant.
- Bark, as with other Strophanthus species, probably yields strophanthin
In the Philippines, bark is employed as an effective arrow-poison.