Crotalaria.| LEGUMINOSAE. 91 
Twining or trailing herbs or undershru 
pper stamen connate at the canes nate calyx-lobes 
very large, 3 lower ones very sma 14. Canavalia. 
Upper stamen het ite free; upper calyx- lobes hot larger 
than the low 
ner a dias & or lateral; pod segs terete 
agi terminal; eee compressed : ; i Le 
Pod coe Jat F : ; ; é 6. Desmodium. 
Leaves i eas ate, with more than 3 leaflets : 
Climbin . Leaflets stipellate; flowers axillary . F : : 9. Clitoria. 
Erect. Leaflets not stipellate: 
Upper stamen free; anthers wee with a point or gland; 
owers i n axillary racemes 3. Indigofera. 
Stamens wainiatle Iphous, at least in the middle; “anthers obtuse; 
racemes gore or leaf-opposed 4. Tephrosia. 
Leaves liga 
ya 
Leaves ending in a terminal tendril; 10 —— : 7. Vicia, 
pasion ending in a terminal mucro; 9 stamens : ‘ ; 8. Abrus. 
Erect, sh : : 5. Sesbania 
Stamens all 1 h 
UB 
SUBORDER II. Caosalpiniee. Corolla  tieaine or aoe so, imbricate, the upper petal 
inside in the bud 
Leaves ine pin 
Pod w _ eu en upper site ie beste very — : ; 21. Mezoneuron. 
Pod a nged : é 20. ao 
Leaves once pny : 22. Cas 
SUBORDER III. Mimoseae. Corolla ue hee a small, yalvate. Leaves twice pinnate; 
flowers in » heads or spikes: 
Stamens 10 : 24. Leucaena, 
Stamens indefinite; leaves mostly replaced by dilated peti oles . | 28. Acacia 
Sta. valves joints of valves meee away from 
tenia en cori Hired or amin of the pod - 25. Mimosa. 
SUBORDER I. PAPILIONACEAE. 
Calyx 5-toothed or cleft, or 4-toothed by the union of the 2 upper 
lobes, rarely splitting irregulary. Corolla very irregular, of 5 petals, the 
upper one or standard (vexillum) outside in the bud, the 2 lateral ones, 
wings (alae), intermediate, the 2 lowest more or less united along one 
edge into a single boat-shaped one called the keel (carina). Stamens 
usually 10, either all united, or diadelphous (when one is usually free 
and the 9 others united), or all free. 
Trine I. GENISTEAE. 
Leaves simple or of 3 (rarely 5) digitate leaflets, all inserted at the 
end of the petiole. Racemes terminal or leaf-opposed. Stamens all 
united into a tube open on the upper side. 
1, CROTALARIA, L 
Calyx 5-cleft. Standard broad, Wings free, sraanveenay wrinkled above 
the claw. Keel with a straight or curved point or beak. Anthers alter- 
