1. Folíolo 1
2. Frutos elípticos a oblongos, semillas 1–4; cáliz con lobos desiguales, el carinal linear-atenuado, ca 2 mm de largo, los vexilares más anchos, agudos a redondeados, 1.5 mm de largo, los laterales agudos, 1 mm de largo; pecíolos 10–15 mm de largo ... D. brownei
2. Frutos orbiculares a subreniformes, semilla 1; cáliz con lobos subiguales
3. Flores 8–9 mm de largo; cáliz 3–3.5 mm de largo; frutos suborbiculares a subreniformes con estípite 3 mm de largo; folíolos agudos hacia el ápice, a menudo discoloros; pecíolos ca 5 mm de largo ... D. ecastaphyllum
3. Flores 5–6 mm de largo; cáliz 2–3 mm de largo; frutos orbiculares a suborbiculares con estípite ca 5 mm de largo; folíolos acuminados hacia el ápice; pecíolos 10–20 mm de largo ... D. monetaria
1. Folíolos más de 1
4. Frutos orbiculares a suborbiculares, semilla 1; folíolos (1–) 3–5 (–6) ... D. monetaria
4. Frutos oblongos a elípticos, semillas 1–5; folíolos 3–18
5. Flores 12–20 mm de largo, cáliz 4–11 mm de largo
6. Cáliz (6–) 7–10 (–11) mm de largo, angostamente alargado en la base; estípite del fruto 10–20 mm de largo ... D. calycina
6. Cáliz 4–8 mm de largo, redondeado en la base pero no alargado; estípite del fruto 5–12 mm de largo ... D. retusa var. retusa
5. Flores hasta 11 mm de largo, cáliz 2–5 (6) mm de largo
7. Folíolos elípticos a oblongos or obovate, secondary veins difficult to distinguish from reticulate tertiary veins on abaxial surface of dried leaflets, apex redondeados, ultimately retuse or emarginados and apiculate; lianas, shrubs or trees
8. Flores 8--9.5 mm de largo, cáliz 3.5--6 mm de largo; frutos 1.5–2 cm de ancho, without conspicuous swelling at seeds, if more than one seed conspicuously constricted between seeds... D. chontalensis
8. Flores 4--5.5 (6) mm de largo, cáliz 2--2.5 mm de largo; frutos 0.9-1.4 cm de ancho; with conspicuous swelling at seeds, not conspicuously constricted between seeds ... D. glabra
7. Folíolos ovados a ovado-oblongos, elípticos, oblongo, o suborbiculares, secondary veins easily distinguished from reticulate tertiary veins on abaxial surface of dried leaflets, apex acuminate, agudos u obtusos (sometimes ultimately apiculate); trees
9. Ovary nearly glabrous, sparsely ciliate on both margins, mature fruit glabrous
10. Leaflets 4—7.5 cm long and 2-3.5 cm wide, envez of leaflets and inflorescence peduncles and branches short pilose to tomentose with tangled hairs… D. cubilquitzensis
10. Leaflets 2.3-4 (-7.5) cm long and 1.2-2 (-2.9) cm wide, envez of leaflets and inflorescence peduncles and branches sericeous with minute, straight tightly appressed hairs … D. ruddiae
9. Ovary densely sericeous over whole suface or thickly villose on margins with some hairs extending on to flat surfaces, mature fruit with minute, fine, appressed hairs
11. Leaflets often appearing nearly glabrous, with minute straight, appressed hairs, with (11) 12—14 pairs of secondary veins, coriaceous to subcoriaceous; calices sericeous with straight, appressed hairs … D. tucurensis
11. Leaflets tomentose with tangled hairs, with 7-9 pairs of secondary veins, chartaceous; calices tomentose, with tangled hairs
12. Distal lateral leaflets of leaves narrowly oblong, 0.3-1 cm wide; fruit not known … D. agudeloi
12. Distal lateral leaflets of leaves elliptic or ovate to lanceolate, 1.5-3 cm wide; fruit relatively thick and woody … D. melanocardium