1	"Plants perennial; lemma midveins simple"	2
1	"Plants annual; midvein of lemmas with 1-3 subsidiary veins close to each other on each side, forming a thickened keel"	3
2	"Spikelets with 4-7 florets; lower glumes 1-1.2 mm long; leaves with hair tufts scattered along the margins"	"Eleusine floccifolia"
2	"Spikelets with 6-16 florets; lower glumes 1.5-2 mm long; leaves without hair tufts along the margins"	"Eleusine poiflora"
3	"Inflorescence branches 4-7 mm wide; spikelets elliptic, disarticulating between the florets; grains oblong to broadly oblong, blackish, not exposed at maturity"	"Eleusine africana"
3	"Inflorescence branches 9-15 mm wide; spikelets ovate, not disarticulating, very closely overlapping; grains almost globose, usually brown, often exposed at maturity"	"Eleusine coracana"