6 POLYPETAL.fi. 



* * Pistil compound, of 8 or more united carpels; as shown by more than one stigma-lobe, 

 stigma, style or cell in the ovary} or by its not being at all one sided. 



Petals more numerous than the sepals: 



Indefinitely numerous, slender, persistent. Aquatic plants. . Nympheeacese, 17 



Just twice as many (4 or 6): sepals caducous .Papaveraceee, 18 



Five to sixteen; style 3-8-cleft: fleshy herbs Portulacacess, 31 



Petals of the same number (5) as the persistent sepals. 



Leaves opposite: sepals equal Hypericaceee, 33 



Leaves alternate: sepals unequal Cistacese, 26 



Leaves radical, hollow, 2-appendaged at hooded top Sarraceniaceae, 18 



2. Stamens and petals on the free or adnate calyx. 



Leafless, thorny, fleshy plants: ovary prickly, inferior. CactacesD, 64 



Leaves mostly opposite, very fleshy: ovary inferior FicoideSB, 65 



Leaves opposite. Shrub: sepals and petals numerous Calycanthaceae, 53 



Shrubs: sepals 4 to 7: flowers white Saxifragacess, 54 



Leaves alternate or radical: herbs or shrubs Rosacege, 48 



Leaves alternate; no stipules: rough herbs: ovary inferior I*oasacea9, 63 



3. Stamens on the claws of the petals. 



'Stamens many, distinct, anthers long: calyx a conical cap: petals 4. .Papaveracese, 18 



Stamens many, united into a tube: anthers small: petals 5 Malvaceas, 33 



'Stamens 10 to 16, united half way: shrub Styracaceae, 77 



JB. STAMENS 10 OB LESS. 



1. Ovary or ovaries superior (i.e., free from the calyx) or mainly o, but 

 sometimes included in the calyx-tube. 



* Pistils more than one, not united. 



Pistils of the same number as petals and sepals. 



Leaves simple, entire, fleshy Crassulaceae, 57 



Leaves pinnate: styles united, globular ovaries distinct Geraniacesa, 36 



Pistils not of the same number as the sepals and petals. 



Two or three. Shrubs or trees: leaves opposite, compound Sapindaceas, 38 



Herbs; leaves simple Saxifragacese, 54 



Many. Stamens on the receptacle Banunculaceae, 14 



Stamena on tta aalvx: leaves compound, mostly radical Rosaceae, 48 



