THE KEY 317 



FF. Plants herbaceous: flowers not in catkins or amenta. 



G. Ovary inferior, 6-celled : stamens 6 or 12 



Aristolochiaceae, p. 348 

 GG. Ovary superior, 1-celled. 



H. Stamens indefinite Ranunculoceae, p. 355 



HH. Stamens few (4-12). 



i. Styles 2-3: stipules sheathing stem at nodes 



of the alternate leaves Polygonaceae, p. 349 



ii. Style single: stipules not sheathing stem 



Urticacex, p. 345 



GGG. Ovary superior, 3-celled Euphorbiaceae, p. 351 



EE . Flowers characteristically polypetalous, generally showy. 

 F. Plants woody. 



G. The stamens numerous (more than 10). 

 H. Leaves alternate. 



i. Ovary 1, simple or compound, or ovaries 

 numerous; fruit a drupe or fleshy: stamens 

 distinct, inserted on the cup-shaped recep- 

 tacle Rosaceae, p. 385 



ii. Ovaries many or numerous: stamens many, 



monodelphous Malvaceae, p. 372 



HH. Leaves opposite: ovary single, 2-5-celled: fruit 



a dry capsule Saxifragaceae, p. 393 



GG. The stamens 10, or less than 10. 



H. Stamens 2 (rarely or accidentally 3 or 4) : fruit a 



drupe, or 2-celled berry or 2-celled pod 



Oleaceae, p. 420 

 HH. Stamens 5, alternate with petals: fruit a berry. 



Saxifragaceae, p. 393 



Stamens 5 or 10 united at base, some sterile: 

 leaves simple: fruit 5-lobed, carpels separating 

 from central axis when ripe. . . . .Geraniaceae, p. 373 

 Stamens 5-10: leaves compound: fruit a leathery 

 1-3-valved pod and flower irregular: or, fruit 

 a 3-celled inflated (bladdery) pod and flowers 



regular Sapindaceae, p. 375 



HHHHH. Stamens usually 10, monadelphous, diadel- 



phous, or distinct: fruit a legume 



Leguminosae, p. 379 

 FF. Plants herbaceous. 



G. The stamens 10 or more. 



H. Ovary 1, simple: fruit a 1-2-seeded berry 



Berberidoceae, p. 360 

 HH. Ovaries several, simple. 



i. Stamens indefinite, hypogynous 



Ranunculaceae, p. 355 



