KEY TO THE SUBSPECIES

1	Pods 4.2-5.4 cm wide, valves velutinous, especially near sutures, shallowly corrugated over seeds; leaflets 12-20 pairs per pinna Parkia sumatrana subsp. sumatrana
1'	Pods c. 2 cm wide, valves glabrous, markedly swollen over seeds and constricted between them; leaflets 14-37 pairs per pinna Parkia sumatrana subsp. streptocarpa