180 PAPILIONACEAE 



3. Cassia Tora L. Low Senna. (Mau. p. 529; I. F. ./. 2036.) 

 Along rivers, southern Pa. to Ind. and Mo., south to Fla. and Mex., and 

 throughout tropical Am. and the warmer parts of the Old World. — Penn- 

 sylvania : Delaware, Lansdowne. 



4. Cassia Maiylandica ly. Wii,D or American Senna. (Man. p. 

 530 ; I. F. _/! 2037.) In swamps and wet soil, N. Eng. to Mich., Neb., 

 Fla. and La. — Pennsylvania : Northampton ; Bucks ; Lehigh ; Dela- 

 ware ; Chester ; Lancaster; Dauphin; Franki,in; Huntingdon;. 

 Ai,i,egheny. 



3. GLEDITSIA L. 



1. Gleditsia triacanthos L. Honey or Sweet Locust. (Man. p. 

 531; I. F. /. 2041.) In woods, N. Y. and Ont. to Mich., Ga. and 

 Tex. — Pennsylvania: Monroe; Northampton; Bucks; DEi,AWAREi. 

 Chester ; Frankwn ; Huntingdon ; Lycoming ; Greene ; Ai,i,e- 

 gheny. 



4. GYMNOCLADUS Lam. 



1. Gymnooladusdloica(L.) Koch. Kentucky Cofeee-Tree. (Man. 

 p. 531 ; I. F. /. 204J.) Rich woods, Ont. to Minn., Neb., Tenn. and the 

 I. Terr. — Pennsylvania : Franklin. 



Family 15. PAPILIONACEAE L. Pea Family. 



Stamens 10 : filaments distinct. Tribe I. PODALYRIEAE. 



Stamens 10 or fewer : filaments monadelphous or diadelphous. 

 I<eaves destitute of tendrils. 

 Herbs, shrubs, trees or woody vines. 

 Fruit 2-valved or indehiscent, not a lomeut. 

 Foliage not glandular-dotted. 



Anthers of 2 kinds ; filaments monadelphous. 



Tribe II. GENISTEAE. 

 Anthers all alike : filaments diadelphous, at least beyond the middle. 

 Leaf-blades 3-foliolate. 

 Leaflets toothed. Tribe III. TRIFOLIEAE. 



Leaflets entire. Tribe IV. LOTEAE. 



Leaf-bladespinnately several to many-foliolate, or rarely i-foliolate. 



Tribe V. GALEGEAE. 

 Foliage glandular-dotted. Tribe VI. PSORALEAE. 



Fruit a loment. Tribe VII. HEDYSAREAE. 



Herbaceous vines or herbs. Tribe VIII. PHASEOLEAE. 



Leaves bearing tendrils. Tribe IX. VICIEAE. 



Tribe I. PODALYRIEAE. 

 A single genus in our range. 1. Baptisia. 



Tribe II. GENISTEAE. 

 Herbs with i-foliolate or 5-11-foliolate leaf -blades. 

 Pod turgid or inflated : leaf-blades i-foliolate. .t. Crotalaria. 



Pod flattened : leaf-blades 5-11-foliolate. 3. Lupinus. 



Shrubs with 1-3-foliolate leaf-blades. 

 Lips of the calyx much longer than the very short tube : leaves prickly. 



4. Ulex. 

 Lips of the calyx about as long as the tube. 5. Cytisus. 



