STANDEE Y TKEES AND SHRUBS OF MEXICO, 431 



Seeds 2 or rarely more. 



Corolla of a single petal 11. AMORPHA. 



Corolla of 5 petals. 



Stamens diadelphous 12. EYSENHARDTIA. 



Stamens mouadelphous 13. PAROSELA. 



Seeds several or numerous ; leaves not gland-dotted. 

 Seeds with a small appendage (strophiole). 



Stamens monadelphous 14. HARPALYCE. 



Stamens diadelphous 15. BRONGNIARTIA. 



Seeds not appeudaged. 

 Inflorescence terminal or leaf-opposed. 



Style bearded on the inner side 16. BARBIERIA. 



Style glabrous or bearded only at apex 17. CRACCA. 



Inflorescence axillary. 



Fruit with 1 or 4 wings (the wings sometimes very narrow). 

 Fruit winged on the upper edge ; plants usually spiny. 



18. ROBINIA. 

 Fruit with 4 longitudinal wings ; plants unarmed. 



19. DAUBENTONIA. 

 Fruit not winged. 



Fruit with inner cross-partitions. 



Style glabrous 20. SESBAN. 



Style bearded 21. BENTHAMANTHA. 



Fruit 1-celled. 



Fruit much inflated, bladder-like 22. DIPHYSA. 



Fruit not inflated. 



Style coiletl. Plants glabrous or nearly so 23. LENNEA. 



Style straight or slightly curved. 

 Style bearded. 



Plants usually unarmed 24. COTJRSETIA. 



Plants very spiny 25. OLNEYA. 



Style glabrous or nearly so. 



Stamens diadelphous .. 26. GLIRICIDIA. 



Stamens monadelphous. 



Leaves estipellate 27. WILLARDIA. 



Leaves stipellate 28. HESPEROTHAMNUS. 



Tribe VI. Hedysareae. 



Leaflets 1 or 3 29. MEIBOMIA. 



Leaflets 4 or more, often numerous. 



Terminal joint of the fruit samara-like, with a large terminal wing. Plants 



scandent 30. NISSOLIA. 



Terminal joint not winged. 

 Leaflets 4 or 6, emarginate at apex. Flowers large, yellow__31. AMICIA. 

 Leaflets 8 to many, rarely if ever emarginate. 



Leaflets pungent-pointed, minute 32. PICTETIA. 



Leaflets never pungent. 



Fruit jointed 33. AESCHYNOMENE. 



Fruit not jointed 34. CLIMACORACHIS. 



Tribe VII. Vicieae. 

 A single genus 35. ABRUS. 



