136 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Leaves simply pinnate, occasionally 2-foliolate; 

 calyx-lobes free to the disk, or perianth reduced 

 to scale or obsolete. (Amherstieae.) 

 Leaflets 1-jugate. 

 Leaflets many-jugate. 

 Leaves simple, or 2-foliolate with more or less con- 

 nate leaflets. (Bauhinieae.) 

 Leaves simply pinnate; sepals 5, distinct or calyx 

 lobes free to the disk; petals 5 or fewer or none; 

 stamens 2 to 10, anthers basifixed or dorsifixed. 

 (Cassieae.) 

 Leaves simple (rarely digitate); sepals 4 or 5, 

 nearly equal, imbricate, more or less corolla- 

 ceous, the outer one somewhat larger than the 

 others; petals 4 or 5; stamens 3 or 4, the anthers 

 basifixed, opening with oblique introrse pores. 

 (Kramerieae.) 

 Leaves bipinnate; calyx divided to the disk; 

 petals usually 5, subequal or but slightly un- 

 equal; stamens 10. (Eucaesalpinieae.) 

 Common petiole very short, spine-pointed; 

 rachis of the pinnae very long, flat, phyl- 

 lodineous. 

 Common petiole plainly developed, not phyl- 

 lodineous. 



Calyx segments valvate in estivation. 



Flowers showy. 

 Calyx segments strongly imbricate in 

 estivation. 



Legume dehiscing lengthwise in the 



middle of the valves. 

 Legume indehiscent or dehiscing 

 lengthwise at the sutures. 

 Flowers zygomorphic, papilionaceous; posterior petal 

 (standard) outside in the bud. 

 Stamens 10, all free. (Sophoreae.) 



Pods winged; leaves with pellucid glandular 



lines and dots. 

 Pods not winged. 



A large tree; pods continuous. 

 A shrub; pods constricted between the 

 seeds. 

 Stamens 10, monadelphous; pod 2-valved, not ar- 

 ticulate; erect herbs or shrubs, with simple or 

 digital ely t rif< >liola telea ves. (Gen isteae.) 

 Tube of the stamens slit along the top; style 

 abruptly bent near the base. 

 Stamens 10, monadelphous or diadelphous; pod 

 2-valved, not articulated; erect, rarely climb- 

 ing herbs, shrubs, or trees with imparipinnate 

 leaves. (Galegeae.) 

 Anthers with glandular, apiculate or penicil- 

 late-pilose connective; plants with malpi- 

 ghiaceous hairs, i. e., appressed hairs at- 

 tached by the middle. (Indigofebinae. i 



16. Ilymenaea (p. 152). 



17. Tamarindus (p. 152). 



18. Bauhinia (p. 153). 



19. Cassia (p. 155). 



20. Krameria (p. 163). 



21. Parkinsonia (p. 163). 



23. Poinciana (p. 165). 



l'l'. Haematoocylum (p. 164). 



24. Caesalpinia (p. 165). 

 Papilionatae. 



25. Myrospermum (p. 168). 



26. Ormosia (p. 16S). 



27. Sophora (p. 169). 



28. Crotalaria (p. 170). 



29. Indigofera (p. I< 2 i. 



