

THE KEY 317 



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

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



Arislolochiaccae, p. 348 

 gg. Ovary superior, 1-celled. 



h. Stamens indefinite Ranunculaceae, p. 355 



hh. Stamens few (4-12). 



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



of the alternate leaves Polygonacese, p. 349 



ii. Style single: stipules not sheathing stem 



Urticaceae, 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- 



tade Rosacea, 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 Saxifragacese, 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 



Olcaceae, p. 420 

 hh. Stamens 5, alternate with petals: fruit a beny. 



Saxifragacese, p. 393 

 hhh. Stamens 5 or 10 united at base, some sterile: 

 leaves simple: fruit 5-lobed, carpels separating 



from central axis when ripe Geraniaceae, p. 373 



hhhh. 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 Sapindacese, 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 



Berberidaceae, p. 360 

 hh. Ovaries several, simple. 



i. Stamens indefinite, hypogynous 



Ranunculaceae, p. 355 



