KEY TO THE SUBSPECIES

1	Leaves glabrous above (except the 1 mm long hairy midrib); fruit 6-10 by 3.5-6.5 cm; seeds 8-10 by 10-12 mm Trichosanthes beccariana subsp. beccariana
1'	Leaves usually short soft-hairy above; fruit 2-4.5(-6) by 2-3 cm; seeds 6-7 by 7-10 mm Trichosanthes beccariana subsp. pusilla