1A.	Young stems densely pubescent, villous or velutinous; stipules pubescent; plants prostrate or decumbent	2
1B.	Young stems glabrous or sparsely pubescent on the edges; stipules usually glabrous; plants erect or prostrate	3
2A.	Young stems villous, the pubescence concentrated on the edges; petiole gland elliptic, 0.6–1.4 mm broad; fruits 3.5–5.5 mm wide, apiculate, densely aggregated on peduncle, valves never curling after dehiscence	D. painteri
2B.	Young stems completely velutinous; petiole gland orbicular, 0.3–0.6 mm diameter; fruits 2–3.5 mm wide apiculate or rarely obtuse at apex, not densely aggregated on peduncle, valves curling after dehiscence	D. velutinus
3A.	Leaflets with raised venation abaxially	D. obtusus
3B.	Leaflets with unraised elevation veins abaxially or only the eccentric midvein visible	4
4A.	Leaflets 20–50 pairs per pinna; pinnae often lanceolate, leaflets gradually decreasing in size distally; stipules with small auricles	D. paspalaceus
4B.	Leaflets 25 pairs per pinna or fewer; pinnae oblong, leaflets not tapering distally; stipules with well-developed auricles	5
5A.	Peduncles 3.5–7.5 cm long; fruits with black, reticulate venation	D. pringlei
5B.	Peduncles 0.5–3 cm long; fruits without black, reticulate venation	6
6A.	Petiolar gland more than 1, 1 more at the insertion of the distal pair of pinnae; fruit valves curling after dehiscence	D. glandulosus
5B.	Petiolar gland 1, at the insertion of the proximal pair of pinnae; fruit valves not curling after dehiscence	D. virgatus