• POLTPETAL^ 



* * Pistil compound, of! or more united carpels; ci» ahown by more tfum one iligma-lobe, 



itigma, style or cell in the ovary; or by its not being at all 07^< sided. 



Petals mora nameroaa than the sepals: 



Indefinitely numerous, slender, persistent. Aqnatio plants . . ITympIiasacesB, 17 



Just twice as many (4 or 6): sepals caducous PapaveracesB, IS 



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



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



Leaves opposite: sepals equal HypericaceSB, 33 



Leaves alternate: sepals unequal Cistacese, 26 



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



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



Leafless, thorny, fleshy plants: ovary prickly, inferior CactaceSB, 64 



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



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



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



Leaves alternate or radical: herbs or shrubs RosacesB, 48 



Leaves alternate; no stipules: rough herbs: ovary inferior Loasaoeas, 63 



3. Stamens on the claws of the petals. 



Stamens many, distinct, anthers long: calyi a conical cap: petals 4. . Papaveraceas, IS 



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



Stamens 10 to 16, united half way: shrub Styracaceas, 77 



B. STAHENS 10 OB LESS. 



1. Ovary or ovaries Buperlor (i.e., free from the caljrs) or mainly so, but 

 sometimes included in the calyx-tubo. 



* Pistils more than one, not united. 

 Pistils of the same number as petals and sepals. 



Leaves simple, entire, fleshy CrassulacesB, 57 



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



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



Twoorthree. Shrubs or trees: leaves opposite, compound Sapindacese, 38 



Herbs; leaves simple SaxifragacesB, 54 



Many, Stamens on the receptacle Ranunculaceae, 14 



Stamens on tha oalvi: leaves compound, mostly radical Bosacese, 4S 



