454 FABACEAE 



Family 65. FABACEAE. Pea Family. 



Herbs, shrubs, or trees, with alternate, mostly pinnately or palmately 

 compound leaves with stipules. Flowers perfect, rarely polygamo-dioeci- 

 ous, irregular, zygomorphic. Calyx of 5, or rarely 4, more or less united 

 sepals, or sometimes by the complete union of some of the sepals becoming 

 2-lipped. Corolla papilionaceous, i. e., consisting of 5 more or less united 

 or distinct petals, of which the upper (banner or standard) is broader and 

 surrounds the rest, the 2 lateral ones (wings) are curved upwards, and the 

 2 lowest (keel) more or less united, forming a boat-shaped organ. Stamens 

 usually 10, sometimes 9 or 5; filaments diadelphous (9 and 1), monadelphous, 

 orrarely distinct. Pistil 1, superior. Fruit a 2-valved or indehiscent legume, 

 1-celled or by the intrusion of the sutures 2-celled, or a loment, i. e., divided 

 by false cross-partitions into several cells. 



Filaments distinct. 



Leaves pinnate. Tribe I. Sophoreae. 



Leaves digitately 3-foliolate. Tribe II. Podalyrieae. 



Filaments monadelplious or diadelphous. 



Racliis of the leaves not produced into a tendril or bristle-like appendage, represent- 

 ing the terminal leaflet. 

 Fruit 2-valved or indehiscent, not a loment. 

 Foliage not glandular-dotted. 



Anthers of 2 lands; filaments monadelphous: leaves digitate; calyx 2- 



lipped. Tribe III. Genisteae. 



Anthers aU alike; filaments diadelphous; caly.x .5-toothed. 



Leaflets toothed. Tribe IV. Trifolieae. 



Leaflets not toothed. 



Filaments all or at least 5 of them (alternately) dilated above; 



flowers umbellate, or solitary. Tribe V. Loteae. 



Filaments all filiform; flowers racemose or capitate. 



Herbs, shrubs, or trees; keel of the corolla neither curved nor 



coiled. Tribe VII. Galegeae. 



Herbaceous vines; keel of the corolla in ours coiled or at least 

 curved. Tribe XI. Phaseoleae. 



Filaments all filiform; leaves odd-pinnate; flowers racemose or 

 capitate. Tribe VII. Galegeae. 



Foliage glandular-dotted. 



Pod prickly. Tribe VIII. Glycyrrhize.\e. 



Pod not prickly. Tribe VI. Psoraleae. 



Fruit a loment, i. e., breaking up transversely into 1-seeded indeliiscent reticulate 

 internodes. Tribe IX. Hedysare.^e. 



Raclils of the leaves produced into a tendril or bristle-like appendage. 



Tribe X. ViCIEAE. 



Tribe I. SOPHOREAE. 

 One genus. 1. Sophora. 



Tribe II. PODALYRIEAE. 

 One genus. 2. Thermopsis. 



Tribe III. GENISTEAE. 

 One genus. 3. Lupinus. 



Tribe IV. TRIFOLIEAE. 



Leaves digitate, in most 3-foliolate. 4. Trifolium. 



lieaves pinnately 3-foliolate. 



Pod curved or coiled. 5. Medicago. 



Pod straight. 6. Meulotus. 



Tribe V. LOTEAE. 



Keel prolonged into an incurved beak; leaves odd-pinnate. 



Stipules foliaceous; flowers in umbels. 7. Lotus. 



Stipules gland-like; flowers mostly soUtary. 8. Acmispon. 

 Keel blunt, not beaked. 



Legumes straight or nearly so, acute, dehiscent. 



Stipules foliaceous; leaves regulaly odd-pinnate. 9. Hosackia. 



Stipules gland-like; leaves irregularly even-pinnate. 10. Aniso lotus. 



Legumes curved, indehiscent, caudate-acuminate. 11. Sypj\l\.tium. 



Tribe VI. PSORALEAE. 



Petal 1 (standard) ; leaves odd-pinnate. 12. Amorpha. 



Petals .5. 



Wings and keel free from the fllament-tube; ovules solitary; leaves digitate. 



13. Psoralea. 



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