[*][*] Anthers uniform (except in n. 13 and 29).
[+] Leaves digitately (rarely pinnately) 3-foliolate; leaflets denticulate or serrulate; stamens diadelphous, pods small, 1–few-seeded, often enclosed in the calyx or curved or coiled. (Trifolieæ.)
9. Trifolium. Flowers capitate. Pods membranaceous, 1–6-seeded. Petals adherent to the stamen-tube.
10. Melilotus. Flowers racemed. Pod coriaceous, wrinkled, 1–2-seeded.
11. Medicago. Flowers racemed or spiked. Pods curved or coiled, 1–few-seeded.
[+][+] Leaves unequally pinnate (or digitate in n. 13); pod not jointed; not twining nor climbing (except n. 20).
[++] Flowers umbellate (solitary in ours) on axillary peduncles. (Loteæ.)
12. Hosaekia. Leaves 1–3-foliolate. Peduncle leafy-bracteate. Pod linear.
[++][++] Flowers in spikes, racemes, or heads. (Galegeæ.)
[=] Herbage glandular-dotted; stamens mostly monadelphous; pod small, indehiscent, mostly 1-seeded; leaves pinnate (except in n. 13).