Cosmibuena macrocarpa (Benth.) Klotzsch ex Walp.

Cosmibuena paludicola Standley, Contr. U. S. Nat. Herb 18: 137. 1916.
Small tree, 4-5 meters high, the branches stout, succulent; stipules oval-obovate, about
12 mm. long, rounded at the apex, thick; petioles very stout, 8-12 mm. long; leaf-blades obovate, obovate-oblong, or oval-obovate, 8-10 cm. long, 3.5-5 cm. wide, acute or cuneate at the base, broadly rounded at the apex, coriaceous, the lateral veins evident, about 5 on each side, nearly straight, arcuately anastomosing near the margin; inflorescence usually 5-flowered, the pedicels very stout, about 1 cm. long; hypanthium cylindric, 12-14 mm. long; calyx 9 mm. long, the 5 lobes about one third the length of the tube, ovate-oblong, obtuse; corolla white, the tube 6-6.5 cm. long, 4-6 mm. thick, the lobes oblong, 2.5 cm. long, 9-1 1 mm. wide, rounded at the apex; anthers 1.7 cm. long; style hirsute above, the branches 1 cm. long.
Type locality: Mangrove swamps, vicinity of Viento Frio, Province of Col6n, Panama.
Distribution: Panama.