Venation types of Curarea: A innermost pair of main veins acrodromous perfect, 7 main veins from the base, the basal-most pair weakest, C. tecunarum (van de Werff & Vásquez 13909) B innermost pair acrodromous imperfect, 3 conspicuous main veins from the base, C. toxicofera (van der Werff & Vásquez 13990) C well-developed areolae and ultimate veinlets often thin, free vein endings uncommon, C. candicans (Jansen-Jacobs et al. 1995) D well-developed areolae and ultimate veinlets thin, once or twice branched, endings often free C. cuatrecasasii (Morales et al. 3243). Scale bar: 3.1 cm (A); 0.7 mm (B); 3.0 cm (C); 1.1 mm (D).