The Flora of the Cayuga Lake Basin 271 



c. Calyx short; stamens 3-6; leaflets small, elliptic-ovate, obtuse. 



2. Gleditsia 

 b. Flowers more showy, yellow ; herbs. 3. Cassia 



a. Corolla papilionaceous ; stamens 10. 



b. Stamens separate; herbs, with 3-foliolate leaves. 4. Baptisia 



b. Stamens monadelphous or diadelphous. 

 c. Stamens monadelphous; anthers of two forms, 5 each; leaves palmately 7—1 1- 



foliolate. 5. Lupinus 



c. Stamens diadelphous, 9 and 1 ; anthers similar ; leaves 3-foliolate or pinnate. 

 d. Leaves 3-foliolate. 



e. Leaflets serrulate; pods 1-6-seeded, indehiscent or tardily dehiscent, very 

 small. 

 /. Pods straight. 



g. Flowers capitate; stamens adhering to the corolla. 6. Trifolium 

 g. Flowers in spikes ; stamens free from the corolla. 7. Melilotus 

 /. Pods curved or coiled; flowers in spikes or heads; stamens free from 

 the corolla. 8. Medicago 



e. Leaflets entire. 

 /. Plants not twining; pods of 1-several 1-seeded joints, indehiscent; 

 flowers purplish; stipules very small. 

 g. Pods 1-seeded, not uncinate-pubescent ; leaflets not stipellate. 



15. Lespedeza 



g. Pods 2-several-seeded, 2-several- jointed, uncinate-pubescent; leaflets 

 stipellate. 14. Desmodium 



/. Plants not twining; pods not jointed, dehiscent; flowers yellow; stipules 



as large as the leaflets (see also 3d /). 9. Lotus 



/. Plants twining ; pods not jointed, dehiscent ; flowers white or purplish ; 

 stipules small. 19. Amphicarpa 



d. Leaves pinnate. 



e. Leaves odd-pinnate; tendrils wanting. 

 /. Plant twining. 18. Apios 



/. Plant not twining. 

 g. Pods short, tardily dehiscent, 1-2-seeded ; flowers spicate, small, purple ; 



shrubs; (foliage glandular-dotted). [Amorpha] 



g. Pods composed of 3-7 4-angled, indehiscent joints; flowers umbellate, 



purple ; herbs. 13. Coronilla 



g. Pods not jointed, dehiscent; flowers not umbellate; herbs or trees. 

 h. Standard broad. 

 i. Wings coherent with the keel ; herbs. 10. Tephrosia 



i. Wings free; trees. 11. Robinia 



h. Standard narrow; herbs with inflated pods. 12. Astragalus 



e. Leaves abruptly pinnate ; rhachis usually tendril-bearing. 



/. Wings and keel adherent; style filiform, bearded at the apex only. 



16. Vicia 

 /. Wings usually free; style flat, bearded down the inner face. 



17. Lathyrus 

 1. Gymnocladus Lam. 



I. G. dioica (L.) Koch. (G. canadensis Lam.) Kentucky Coffee Tree. 



Rich gravelly bottom-land soil ; rare. May 25-June 10. 



"At the bottom of a ravine near the borders of Cayuga L." (Dr. Alex. 

 Thompson in Torrey's Fl. of N. Y. ; also in Dr. Thompson's Cat. of 1841) ; "it is 

 quite likely the precise locality was Lockwoods Flats at the mouth of Big Gully, 

 where Professor Thomas of Union Springs remembers to have seen it many years ago" 

 (D.) ; "Ithaca" (in Herb. Van Duzer, see Paine' s Cat.). Three trees in the town 

 of Lansing, near Cayuga Lake at McKinneys (H. B. Lord in 19th Regents Rept., 



