1	Leaves abaxially strongly glaucous	2
1	Leaves green on both surfaces	3
2	Lower leaves pinnately compound, leaflet blades 7–15 × 3–7 cm	Nekemias chaffanjonii
2	Lower leaves bipinnately compound, leaflet blades 2.5–6 × 1–3.5 cm	Nekemias hypoglauca
3	Leaves pinnately compound	4
3	Leaves bipinnately, ternately bipinnately to tripinnately compound	5
4	Leaflets 3.5–14 × 2–6.5 cm, margin 5–15-toothed, abaxially densely ferruginous pilose; berries 8–15 mm in diameter	Nekemias rubifolia
4	Leaflets 3–6 × 0.5–3 cm, margin entire or with 1 to several inconspicuous teeth, midvein abaxially sparsely pilose; berries 5–7 mm in diameter	Nekemias gongshanensis
5	Tendril trifurcate; leaflets 4–12 × 2–6 cm	Nekemias megalophylla
5	Tendril bifurcate; leaflets 1–5 × 0.5–2.5 cm	6
6	Leaflet margin with 2–4 large coarse teeth; from North America or the Caribbean	Nekemias arborea
6	Leaflet margin serrate with 5–15 teeth on each side; from Asia	7
7	Leaflet margin coarsely serrate, central leaflet ovate-elliptical	Nekemias grossedentata
7	Leaflet margin ± undulate, central leaflet obovate or ovate	8
8	Leaves and inflorescences pilose to glabrescent	Nekemias cantoniensis
8	Leaves and inflorescences pubescent to densely so	Nekemias celebica