1	Rachis ending in a leaflet (sometimes modified into tendril or spine in Cicer)		(2)
+	Rachis ending in a bristle or tendril		(3)
2 (1)	Stipules usually stipitate, the upper part entire, the lower deeply divided into 3 segments or spiny; fruit narrowly oblong, ellipsoid to linear-oblong, turgid		Cicer
+	Stipules entire, fruit broadly oblong, compressed, 1-2-seeded		Lens
3 (1)	Fruit broadly oblong, compressed, 1-2-seeded; stipules entire		Lens
+	Fruit narrowly oblong to linear-oblong; stipules foliaceous or sagittate or semisagittate		(4)
4 (3)	Stipules large, leafy; style-margin winged at the base		Pisum
+	Stipules not so large and leafy; style not winged		(5)
5 (4)	Leaflets sharply serrate, glandular-hairy, not exceeding 2 cm; style glabrous		Cicer
+	Leaflets not sharply serrate, not glandular hairy, if with broad, blunt teeth then mostly 2-4cm long, style hairy or glabrous		(6)
6 (5)	Style tapering apically, glabrous or bearded at apex, all round or on lower surface only; staminal sheath oblique at the apex; leaflets usually numerous		Vicia
+	Style flattened or dorsiventrally compressed towards the apex, glabrous or bearded along the upper surface; staminal sheath truncate at the apex, leaflets usually 2-4, rarely numerous		Lathyrus