LEGUMINOS.SI. 83 



Division II, OHOBIPETAL^B PEBIGYN^E. 

 Petals mostly distinct. Calyx more or less distinctly synsepalous, and 

 stamens perigynous. 



Obdbr xxxiii. LEGUMINOS/E. 



Herbs, shrubs or trees with alternate, stipulate, compound (in Siliquas- 

 Irum simple) leaves; leaflets mostly entire, the upper, in some genera, 

 converted into tendrils. Sepals more or less united and forming a 2 — 5- 

 toothed or -cleft cup, the odd tooth or segment inferior. Petals 5 

 (sometimes by abortion fewer), more or less united above the base; the 

 two lowest joining to form the keel; the two lateral enfolding this and 

 called the wings; the uppermost one broader than the others, usually 

 erect, but in the bud folded over the other (except in Siliquastrum) and 

 called the banner; the corolla as a whole papilionaceous, or butterfly- 

 shaped. Stamens usually 10, distinct or diadelphous (9 and 1), or 

 monadelphous. Pistil 1, usually becoming a legume, i. e., a 2-valved 

 1-celled pod with 1 row of seeds; these attached to the upper suture, and 

 containing no albumen, the large embryo filling the integuments. 



* Unarmed shrubs. 



Leaves broad, simple Siliquastbum 1 



unequally pinnate, leaflets many Amoepha 6 



few, 1-foliolate; branches reedy., Spabtium 15 



3-foliolate, not aromatic Cytisus 13 



*' glandular and aromatic Psoralea 8 



palmately 5— 9-f oliolate Lupinus 16 



* * Spinesceni or prickly shrubs or._ trees. 



Leaves unequally pinnate; leaflets many Pseudacaot a 7 



" all in the form of spine-like green organs Ulex 14 



" 1— 3-foliolate; branohlets spinescent Xylothermia 17 



* * * Herbaceous plants. 



Leaves equally pinnate, tendril-bearing; 



Style villous all around at apex Vioia 2 



" '' lengthwise on one side Lathyrus 3 



Leaves unequally pinnate; fl. capitate or racemose; 



Pods commonly inflated, not prickly Abtbagalus 4 



" oblong, prickly Glyoyrrhiza 5 



Leaves of 1 — oc often unequally distributed leaflets; 



fl. in an umbel often with a bract at its base Lotus 9 



f fl. in slender racemes Melilotus ' 11 



pods coiled or curved Medic A 12 



10 



Leaves pinnately 3-foliolate ^ fl . capitat6i yellow Teifolium 11, 



^ herbage dotted, aromatic Psoralea 



r , , i a j. ■,* i i. ( fl. capitate or umbellate Teifolium 



Leaves palmately 3-foliolate ] ,, „, 



< fl. racemose, yellow Thermopsis 18 



T , , . _ n jt ,. , ,( calyx bilabiate Lupinus 16 



Leaves palmately 5— 9-foholate >,.,„.. ^. „ 



'■ herbage dotted, aromatic PSORALEA 8 



