ANALYTICAL KEY 19 



Stipules none when the leaves are opposite. 

 Stamens 5, united at base into a 10-toothed 



cup or tube ; leaves all radical Galax, 642 



Stamens free from each other. 

 Style 1. 



Stamens free from the calyx ERICACEAE, 625 



Stamens inserted on the calyx LYTHRACEAE, 591 



Styles 2-5, or splitting into 2 in fruit. 

 Stamens free from the calyx; leaves 



opposite CARYOPHYLLACBAE, 377 



Stamens inserted on the calyx ERICACEAE, 625 



v. Calyx-tube adherent to the ovary, at least to its lower half G. 

 G. Tendril-bearing and often succulent herbs CUCURBITACEAE, 764 



G. Not tendril-bearing H. 

 H. Ovules and seeds more than 1 in each cell. 

 Ovary 1-celled. 

 Sepals or calyx-lobes 2 ; ovules borne at the base of the 



ovary PORTULACACEAE, 387 



Sepals or calyx-lobes 4-5 ; placentae 2-3, parietal SAXIFRAGACEAE, 444 

 Ovary 2-many-celled. 



Anthers opening by pores at the apex MELASTOMACEAE, 593 



Anthers not opening by pores. 

 Stamens inserted on or about a flat disk which covers 



the ovary CELASTRACEAE, 556 



Stamens inserted on the calyx. 



Style 1 ; stamens 4 or 8 (rarely 5) ONAGRACEAE, 594 



Styles 2-3, distinct ; stamens 5 or 10 SAXIFRAGACEAE, 444 



H. Ovules and seeds only 1 in each cell. 

 Stamens 5 or 10. 

 Trees or shrubs. 



Leaves simple, not prickly Crataegus, 460 



Leaves compound, or prickly ARALIACEAE, 605 



Herbs. 



Fruit dry, splitting at maturity ; styles 2 UMBELLIFERAE, 607 



Fruit berry-like; styles 2-5, separate or united ARALIACEAE, 605 

 Stamens 2, 4, or 8. 



Style and stigma 1 ; fruit a drupe CORNACEAE, 623 



Styles or stigmatic branches or sessile stigmas usually 



more than 1 ; fruit not drupaceous. 



Shrubs or trees HAMAMELIDACEAE, 452 



Herbs. 



Style 1 ; stigma 2-4-lobed ONAGRACEAE, 594 



Styles or sessile stigmas 4 HALORAGIDACEAE, 602 



n. Petals more or less united I. 



I. Stamens more numerous than the lobes of the corolla J. 

 J. Ovary 1-celled. 



Placenta 1, parietal LEGUMINOSAE, 499 



Placentae 2, parietal FUMARIACEAE, 416 



Placenta at the center or base of the ovary STYRACACEAE, 649 



J. Ovary 2-celled ; cells 1-ovuled POLYGALACEAE, 538 



J. Ovary 3-<*-celled K. 

 K. Stamens free from the corolla. 



Style 1 ; leaves simple ERICACEAE, 625 



Styles 5; leaves 3-foliolate OXALIDACEAE, 532 



