Woody vine; stem 15 x 10 mm in cross section, bark thick and fissured; branchlets with fine, short and sparse trichomes; pseudostipules lacking. Leaves: petiole twining, about 2 cm long; blade chartaceous, elliptic, 7-11 x 4-7 cm, pubescent when young, becoming glabrescent except on the veins and dull above, beneath pubescent, apex acute to acuminate, base deeply cordate. Inflorescence axillary, hanging, 1-2(-3) together; racemes 2-4 cm long, occasionally up to 10 cm, about 1 cm between flowers; bracts small, leafy, linear to triangular, 6-10 x 2-4 mm; pedicels ± 5 mm long not longer than the ovary, pubescent. Flowers: ovary ± 7 mm long, pubescent; perianth pilose with multicellular hairs, dark purple with green veins outside; utricle ovoid, 7 mm long; tube 10-15 mm long, broadening into a flattened mouth; lobe triangular, about 15 mm long and wide, apex acute, inside yellow. Fruit (4-)5-6 cm long, glabrous, with a longitudinal ridge along the middle of each carpel, inner walls membranaceous, comb-like; seeds cordiform, 5 x 5 mm, surrounded by 2 parallel, papyraceous wings, with rounded apex, 7-8 x 12-15 mm including wings, base cordate.
French Guiana present, NW region present
Guyana (NW region) and French Guiana (GU: 7; FG: 1).
The only differences with
A. paramaribensis are mentioned in the key (14). In the future, with more collections available showing the variability of this species, A. consimilis might prove to be a synonym. In the treatment for Flora of Ecuador, Gonzalez prefers to place A. consimilis in the synonymy of A. acutifolia Duchartre.