DIADELPHIA DECANDRIA 399 



DTADELPHIA. 

 HEXANDRIA. 



Genera. 



301. CORYDALIS. Cal. 2-leaved ; cor. 4-petaled; Jilam. in 3 set*; 



silique 2-valved, compressed, oblong, many-seeded. 

 305. FUMARIA. Calyx 2-leaved ; corolla 4-petaled, one of the petals 



gibbous at the base ; silicle ovate or globose. 1-seeded, not opening. 



OCTANDRIA. 



606. POLYGALA. Cal. 5-leaved, persistent; 2 of the leaflets wing- 

 shaped and colored ; caps, obcordate, 2-celled, 2-valved ; seeds pu- 

 bescent. 



DECANDRIA. 



* Stamens all connected, (monadelphous.) 



307. LUPINUS. Cal. bilabiate ; anth. alternately oblong and round- 

 ish ; legume coriaceous, torulose. 



308. CROTALARIA. Vexillum large and cordate; keel acuminate; 

 Jilam. united, with a dorsal fissure ; legume pedicellate, turgid. 



* * Stamens diadelphous. 

 t Stigma pubescent. 



309. PISUM. Cal. with the segments leafy, equal ; vexillum with 2 

 protruding plaits; style compressed, carinate, villous on the upper 

 side ; suture of the legume naked. 



30. LATHYRUS. Style flat, villous on the upper side, dilated up- 

 ward ; col. with the 2 upper segments shortest. 



31 1. VICIA. Style transversely bearded beneath the stigma ; cal. with 

 the three inferior segments straight and longer; vexillum emargi- 

 nate. 



1 1 Legume mostly 1-sceded. (Not of the preceding sections.) 



312. MELILOTUS. Flowers racemose. Calyx tubular, 5-toothed; 

 keel simple, shorter than the wings and vexillum ; legume longer 

 than the calyx, rugose. 



313. TRIFOLIUM. Flowers subcapitate legume covered by the 

 calyx, without valves, 2 4-secded. 



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