GERANIALES 577 



Herbs. 



Capsule splitting into 5 carpels ; leaves 3-foliolate or dissected 



_, ■■""'■ Geraniaceae. 



Lapsule 2-5 celled not splitting into carpels. 



Stamens 2-3 times as many as the petals. 



Leaf 3-foliolate Oxalidaceae. 



Stamens as many as the petals Linaceae. 



Trees or shrubs with compound leaves; leaves often punctate 



Leaves punctate Rutaceae. 



Leaves not punctate Simarubaceae. 



Flowers irregular; petals 3, stamens diadelphous or monadelphous. .Polygalaceae. 



Flowers regular generally apetalous, monoecious; carpels mostly 3; generally 



herbs with milky juice Euphorbiaceae. 



Fig. 317. Nasturtium (Tropaeolum mains'). Flowering 

 branch. (After Faguet). 



Geraniaceae 



Herbs with alternate or opposite leaves; flowers perfect, regular, S-nerved, 

 hypogynous; stamens as many or twice as many or more than the petals; ovary 

 1, usually S-lobed; ovules 1-2 in each cavity; fruit capsular. About 450 species 

 of wide distribution. Native to the tropics and temperate regions of both 

 hemispheres. Many plants of this order are frequently cultivated; among these 

 are the South African pelargonium, commonly called the geranium, which con- 

 tains geraniol Cj^H^gO. The sharp points of the fruit of some are injurious. 



