LEGUMINOSA. (PULSE FAMILY.) 87 
* Stamens monadelphous: anthers of 2 forms. Leaves simple, or palmately compound. 
1. CROTALARIA. Calyx 5-lobed. Legume inflated. Upper stipules decurrent. 
2. LUPINUS. Calyx 2-lipped. Legume flattened. Stipules not decurrent. 
* * Stamens diadelphous: anthers alike. Leaves trifoliolate, rarely palmate or pinnate, the 
earliest ones alternate. 
8. MEDICAGO. Legume membranaceous, curved or coiled, 1-many-seeded. Flowers 
racemed. 
4. MELILOTUS. Legume coriaceous, straight, rugose or veined, 1-4-seeded. Flowers 
racemed or spiked. 
5. TRIFOLIUM. Legume smooth, membranaceous, 1-4-seeded. Flowers capitate. 
6. HOSACKIA. Legume straight, many-seeded. Peduncle 1 - 3-flowered. 
* * * Stamens monadelphous or diadelphous. Legume mostly 1-seeded and indehiscent. 
Plants dotted with small dark glands. Earliest leaves opposite. 
+ Legume included in the calyx. 
7. PSORALEA. Corolla papilionaceous. Stamens 10, diadelphous: half of the anthers often 
imperfect, 
8. PETALOSTEMON. Stamens6, united into a cleft tube, and adnate to the claws offour of 
the nearly regular petals. 
9. DALEA. Stamens 9 or 10, the tube partly adnate to the claws of the petals. 
+ + Legume exserted. 
10. AMORPHA. Stamens 10, monadelphous. Wings and keel none. 
** *% Stamens mostly diadelphous. Legume 1- many-seeded, 1-celled, 2-valved. Leaves 
pinnate. 
2 + Trees or shrubs. 
Il. ROBINIA. Legume flat and thin, margined on one edge. Trees or shrubs. dtd 
12. WISTARIA. pss wn cie rag 
shrubs. 
t t Herbs. $ A > 
18. TEPHROSIA. Calyx 5-cleft. Vexillum large. Legume compressed, many-seeded. Leaves 
unequally pinnate. 
l4. INDIGOFERA. Calyx minute, 5-cleft. Vexillum small. Legume terete or angled, 
2- many-seeded. Leaves unequally pinnate. 
15. GLOTTIDIUM. Calyx truncate. Legume oblong, 2-seeded. Leaves abruptly pinnate. 
16. SESBANIA. Calyx 5-toothed. Legume very long and slender, many-seeded. Leaves 
abruptly pinnate. 
***** Stamens diadelphous. Legume 2-celled lengthwise, or l-celled, with one of the 
sutures turned inward. Leaves pinnate. i 
T. ASTRAGALUS. Stamens 10, diadelphous. Legume tumid. 
Tawe I. VICIEÆ. Stamens diadelphous (9 & 1). Legume 2-valved, not jointed. 
s eec nnn Habe dissi ipio i NE 
_ the petioles of the pinnate leaves ending in a tendril. 
d. VICIA. Style filiform, bearded at the apex, or on the side facing the keel. 
19. LATHYRUS. Style flattened, bearded on the side facing the vexillum. 
Tame II. HEDYSAREAS. Stamens monadelphous or diadelphous. Legume sepa- 
rating transversely into 1-seeded indehiscent reticulated joints, or 1-jointed. — Stems not 
* Flowers yellow. i 
E JESOHYNOMENE. Leaves pinnate. Stamens diadelphous (5 & 5). Yiowere perfetti 
21. ZORNIA. Leaves palmately compound. Legume 2-65-jointed. Flowers perfect. ———— 
22. STYLOSANTHES. Leaves trifoliolate. Anthersof 2 forms. Flowers monoecious. 
#8 CHAPMANNIA. _Teaves pinnate. Anthers alike. ‘Flowers monæcious. E 
