12 KEY TO THE O 



Leaves alternate, simple and compound. 



Stamens 5-10. Sapiudaceae. 



Stamens (perfect) 2, opposite 2 of 5 petals. 



Sabiacese 



Serves III. Calycifloral. Flowers regular, mostly bisexual ; calyx 

 inferior or superior ; petals distinct, or connate at the very base only ; disk 

 or very obscure ; stamens inserted in the limb of the calyx. 



(Ill the genera and orders with inferior ovaries, the limb of the calyx is 

 often undeveloped, which character should refer them technically to the 

 apetalous division. Most of them will be found also in that division. 

 Flowers bisexual or polygamous. 



Ovary superior (or half-superior in Trapa and FicoideieX 



i 



Herbs. 



Fruit a solitary follicle, leaves usually compound. 



Leguminoste. 



Fruits of small achenes, leaves compound. 



Rosaceae. 



Fruits drupaceous coriaceous. Haloragete. 



(Haloragis). 

 Fruits capsular. 



Sepals 2, embryo annular. Portulacacese. , 



Sepals 3-5. / 



Aquatic herbs. Lythrarieto. 



Terrestrial herbs. j 



Leaves not carnose. Saxifrage*. 

 Leaves carnose. Crassulacese 

 Fruits indeliisceiit, '2-or 3- homef! nuts, aquatic. 



Onagrariese. (Trapa). I 



Trees or shrubs. 



Fruits of many small drupes, prickly shrubs, 



Ho sac etc. (liitbus). 

 Fruits various. 



Ovary 1- celled, (style single ; leaves alternate 



