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 CARYOPHYLLACEAE, 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) 

 Styles 2-3, distinct ; stamens 5 or 10 

 H. Ovules and seeds only 1 in each cell. 

 Stamens 5 or 10. 

 Trees or shrubs. 

 Leaves simple, not prickly 

 Leaves compound, or prickly 

 Herbs. 



Fruit dry, splitting at maturity ; styles 2 

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

 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 ONAORACEAE, 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. 



ONAGRACEAE, 594 

 SAXIFRAGACEAE, 444 



Crataegus, 460 

 ARALIACEAE, 605 



UMBELLIFERAE, 607 

 ARALIACEAE, 605 



J. Ovary 1-celled. 



Placenta 1, parietal 

 Placentae 2, parietal 



Placenta at the center or base of the ovary 

 J. Ovary 2-celled ; cells 1-ovuled 

 J. Ovary 3-oc-celled K. 

 K. Stamens free from the corolla. 

 Style 1 ; leaves simple 

 Styles 5 ; leaves 3-foliolate 



LEGUMINOSAE, 499 



FUMARIACEAE, 416 



STYRACACEAE, 649 



POLYGALACEAE, 538 



ERICACEAE, 625 

 OXALIDACEAE, 532 



