Heliotropium sarmentosum (Lam.) Craven
Craven, L.A. (2005) Blumea 50: 380.
Vine stem diameters to 4 cm recorded. Bark sometimes shed in long narrow flakes.
Leaf blades about 7-15.5 x 3.5-8 cm, petioles about 1-2 cm long. Leaf blades glabrous or almost glabrous on the upper side but variously hairy on the lower surface. Leaf blades brittle, breaking when folded back on themselves. When broken, leaf twigs emit an odour like that of liniment.
Fruits globular, about 4-5 mm diam., 4-celled, calyx hairy, persistent at the base of the fruit and style persistent in a hollow at the apex. Pyrenes (endocarp + seed) about 2-3 mm long, usually 1-4 per fruit. Endosperm not copious. Embryo about 1.5-3 mm long, cotyledons about twice as wide and slightly longer than the radicle.
Features not available.
This species has been used medicinally in Papua New Guinea. Cribb (1981).