Ovary simple, 1-celled; placenta parietal, many-ovuled. 



Leaves 2-3-ternately compound or dissected. 



Ranunculaceae. 1. 

 Leaves peltate, pc lmately lobed. 



Podophyllum, in Berberidaceae, 7. 



Ovary compound, 1-eelled; placentae 2 or more, parietal. 



Sepals caducous; juice milky or colored. Papaveraceae, 9. 



Capparidaceae, 16. 



ClSTACEAE. 17. 



stamens monodel- 

 Malvaceae, 23. 



TlLIACEAE, 25. 



pomaceae, 49. 

 Saxifragaceae, 51. 



Cactaceae, 49. 



LOACEAE, 59. 



Sepals deciduous. 4. 



Sepals persistent, 3 or 5. 



Ovary compound, several-celled. 



Calyx valvate in the bud, and persistent: 



phous; anthers 1-celled. 



Deciduous; anthers 2-celled. 



Calyx imbricated in the bud, persistent. 



Ovaries on many partitions: aquatics. Nymphaeaceae, 7. 



Ovaries on 5 placentae in the axis. Sarraceniaceae, 9. 



* * Calyx more or less coherent with the surface of the compound ovary. 



Ovary 8-30-celled; ovules many, on partitions, aquatic. 



Nymphaeaceae, 7. 

 Ovary apparently 10-celled, each division 1-ovuled. 



Amelanchier, in Pomaceae, 49. 

 Ovary 2-5-celled. 



Leaves alternate, stipulate. 



Leaves opposite, exstipulate. 

 Ovary 1-celled; ovules parietal. 



Fleshy jointed prickly plants; petals many. 



Rough-leaved plants; petals 5 or 10. 

 Ovary 1-celled; placenta free, central; pericarp opening- by a lid. 



PORTULACACEAE, 21. 



B. Stamens of the same number as the petals and opposite them. 

 Pistil solitary; flowers mostly perfect; herbs, shrubs, or woody vines. 

 Ovary 1-celled: anthers opening- by valves. Berberidaceae, 7. 



Ovary 1-celled; anthers longitudinally dehiscent. Fortulacaceae, 21 

 Ovary 2-4-celled. 

 Calyx-lobes small or wanting; petals valvate. Vitaceae, 29. 



Calyx 4-5-cleft valvate in the bud; petals involute. Rhamnaceae, 29. 

 Pistils 3-6, separate; flowers dioecious; woody vines. Menispermaceae, 7. 

 C. Stamens of tlie same number as the petals and alternate with them or not more 

 tfian twice as many. 



* Ovary superior, the calyx entirely free. 

 f Ovaries 2 or more, separate. 

 Stamens hypogynous, distinct. 

 Leaves pellucid-punctate. 

 Leaves not pellucid-punctate. 

 Tree; leaves odd-pinnate; lowers paniculate. 

 Herbs; leaves thick, succulent; flowers cymose. 

 Herbs; leaves not fleshy; inflorescence various. 

 Stamens inserted on the calyx, distinct. 

 Stamens twice as many as the pistils. 



Stamens neither the same nor twice the number of the pistils. 

 Leaves stipulate. Rosaceak. 44. 



Leaves exstipulate. Samfkagaceae, 51. 



Rutaceae. 27. 



SlMARVBACEAE, 28. 



crassulaceae. 53. 

 Ranunclaceae, 1. 



crassulaceae, 53. 



