30. KEY TO THE FAMILIES. 



Not as for Portulaca. 350. 



350. Leaves opposite or whorled, stipulate. Stipules interpetiolar. 

 Stamens free, as many as petals. Ovary usually 2 or more 



celled. 142 RUBIACEAE. 



Leaves alternate, or if opposite, not with interpetiolar stipules. 



35L 



351. Ovary 1 celled. 352. 

 Ovary 2 or more celled. 356. 



352. Ovule L Flowers usually in heads. 353. 

 Ovules more than 1. 354. 



353. Stamens 2 or 4 free. 144 DIPSACEAE. 

 Stamens 5. Anthers united. 148 COMPOSITAE. 



354. Succulent leafless plant, with numerous stamens. (Rhipsalis). 



104 CACTACEAE. 

 Stamens 5. Leafy plants. 355. 



355. Sea shore herb. (Samolus). 120 PRIMULACEAE. 

 Shrubs or trees. (Maesa). 119 MYRSINACEAE. 



356. Ovules 1 in each ovary cell. 357. 

 Ovules 2 or more in each ovary cell. 358. 



357. Corolla irregular. Strand plant. Leaves large, fleshy. • 



(Scaevola). 147 GOODENIACEAE. 

 Corolla regular. Leaves small. (Berardia). 



65 BRUNIACEAE. 



358. Stamens as many as or fewer than corolla lobes. 



146 CAMPANULACEAE. 

 Stamens more than corolla lobes. 359. 



359. Petals numerous. Herbs. (Mesembrianthemum). 



43 AIZOACEAE. 

 Petals 3 — 6, Shrubs or trees. 360. 



360. Petals united at base. Filaments united at base. 



108 LECYTHIDACEAE. 

 Petals united. Filaments free or nearly so. 



Ill MYRTACEAE. 



