GENERAL KEY TO THE I'OLYI'KTALOIS OKDKUS. xv 



= = Calyx small : petals valvate : fruit baccate: leaves (with rare exceptions) 

 pahuatcly lobed or palmately or piimately compound, alternate. 



43. VITACE.E. Mostly woody vines cliinliing by prehensile or glaiid-lH-arinj; U-n- 

 drils. Flowers small, regular, dichlamydt-ous. Petals 1 or 5, som.'tim.-s free, 

 sometimes coherent, often caducous. Ovary (in ours) 2-celled ; ovul.-s geuunate in 

 the cells. 



•»- -1- H- ■•- Sapindalks. Ovary superior, often strongly lol)ed or divided ; 

 ovules 1 or 2 (very rarely cc) in each cell, mostly ascending or horizonUil : 

 stamens as many as the petals and alternate with them or twice as many or 

 much more often of some irregular number. 



44. SAPINDACE.E. Trees, shrubs, or woody (rarely herbaceous) tfMidriliffrou.s 

 climbers, ours with compound or i>alniately lobed leaves and commonly polygamo- 

 dicecious often irregular flowers. Disk annular or more or less deeply lobed, often 

 unsymmetrical, rarely obsolete. Fruit various, most frequently samaroid, or a 

 bladdery or coriaceous capsule. 



•»-■«-•<- -t- -^ PoLYGALiNEiE. Ovules pendulous, solitary (rarely and only 

 in foreign genera 2 to 4) in the cells of the 2(-5)-locular ovary ; rhaphe 

 ventral : disk glandular or none : stamens mostly 8 and monadelphous, more 

 or less adnate to the petals : seeds mostly carunculate. 



45. POLYGALACEuE. Ours low herbs, undershrub.s, or erect rarely thorny shrubs. 

 Pubescence of simple hairs or none. Leaves entire, alternate, ojiposite, or whor|p<i. 

 Flowers pseudo-papilionaceous, dichlamydeous, rarely solitary, mostly in terminal 

 racemose, spicate, or capitate inflore.Kcences ; these sometimes corymbosely arranged. 

 Calyx with sepals very unequal, three usually sepaloid and two larger showy and 

 petaloid. Filaments short ; anthers dehiscent by terminal pores or oblique iutrorse 

 slits. 



