194 FLORA OF PHILADELPHIA. 



3. Cassia Tora L. M. p. 529. ' Introduced. Summer. 



Delaware— Banks of Darby Creek, Burmont (Mae.). 



4. Cassia Mabylandica L. Wild Senna. M. p. 530. Alluvial and sandy 



soil. Summer. 



5. Cassia occidentalis L. M. p. 530. Introduced. Summer. 



Delaware— Banks of Darby Creek, Burmont (Mac.). 



3. GLEDITSIA L. 

 1. Gleditsia triacanthos L. Honey Locust. M. p. 531. In cultivation 

 and escaped. Early summer. 



4; GYMNOCLADUS Lam. 

 1. Gymnocladus dioica (L.) Koch. Kentucky Coffee4rfe. M. p. 531. In 

 cultivation. Spring. 



Family 17. PAPILIONACEAE L. Pea Family. 



The 10 stamens distinct. 



Leaves pinnate. Tribe 1. Sophoreae. 



Leaves digitate or simple^ . Tribe 2. Podalyrieae. 



The stamens monadelphous or diadelphous. 



Herbs, shrubs, woody vines or trees, the leaves not tendril-bearing. 

 Pod not a loment, 2-valved and indehiscent. 

 Foliage not glandular-dotted. 



Stamens monadelphous; anthers of 2 kinds. 



"'•• ' Tribe 3. Genisteae. 

 Stamens diadelphous, anthers all alike. 

 Leaves 3-foliolate, rarely 1-foliolate. , 



Leaflets denticulate. Tribe 4. Irifolieae. 



Leaflets entire. Tribe 5. Loteae. 



Leaves pinnately several-many-foliolate, rarely 1-foli- 

 olate. Tribe 7. Galegeae. 

 Foliage glandular-dotted; pod indehiscent; 1-2-seeded herbs. 



Tribe 6. Psoraleae. 

 Pod a loment; herbs. Tribe 8. Uedysareae. 



Herbaceous' vines, or herbs; leaves evenly pinnate with tendrils. 



, ... Tribe 9. Vicieae. 



"Vines, ours herbaceous, or erect herbs; leaves odd-pinnate, mostly 3-folio- 

 late, without tendrils. Tribe 10. Phaseoleae. 



Tribe 1. SOPHOEEAE. 1. Cladrastis. 



• Tribe 2. PODALYRIEAE. 2. Baptisia. 



Tribe 3. GENISTEAE. 



Herbs, with, simple or 5-11-foliolate leaves. 



Leaves simple, pod inflated. 3. Crotalaria. 



Leaves 5-11-foliolate; pod flattened. 4. Lupinus. 



Shrubs, with 1-3-foliolate leaves. 5. Cytisxts. 



Tribe 4. TRIFOLIEAE. 



Flowers spiked or capitate; pods curved or coiled. 6. Medicago. 



Flowers in long racemes; pods coriaceous. 7. Melilotus. 



Flowers capitate or umbelled ; pods straight, membranous. 8. TrifoUum. 



Tribe 5. LOTEAE. 9. Lotus. 



