34 Key to the Families 



Styles or stigmatic branches or sessile stigmas usually more than 1; 

 fruit not a drupe. 



Shrubs or trees 123. Hamamelidaceae, p. 523. 



Herbs. 



Style 1; stigma 2-4 lobed 224. Onagraceae, p. 699. 



Styles or sessile stigmas 4 225. Haloragidaceae, p. 710. 



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

 Ovary 1-celled. 



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



85. PORTULACACEAE, p. 434. 



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



117. Saxifragaceae, p. 514. 



Ovary 2-many-celled. 



Anthers opening by pores at the apex. . .223. Melastomaceae, p. 698. 

 Anthers not opening by pores. 



Stamens inserted on or about a flat disk which covers the ovary. 



158. Celastraceae, p. 653. 



Stamens inserted on the calyx. 



Style 1; stamens 4 or 8 (rarely 5) 224. Onagraceae, p. 699. 



Styles 2 or 3, distinct; stamens 5 or 10 



117. Saxifragaceae, p. 514. 



n. Petals more or less united I. 



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

 J. Ovary 1-celled. 



Placenta 1, parietal 128. Leguminosae, p. 582. 



Placentae 2, parietal 104A. Fumariaceae, p. 482. 



Placenta at the center or base of the ovary 241. Styracaceae, p. 751. 



J. Ovary 2-celled; cells 1-ovuled 145. Polygalaceae, p. 633. 



J. Ovary 3-many-celled K. 



K. Stamens free from the corolla. 



Style 1 ; leaves simple 233. Ericaceae, p. 733. 



Styles 5 ; leaves 3-foliolate 130. Oxalidaceae, p. 626. 



K. Stamens attached to the base or tube of the corolla. 



Saprophytic herbs without green foliage 6169. Monotropa, p. 737. 



Not saprophytic; foliage green. 



Trees or shrubs; anthers mostly 2-celled. 



Filaments united at the base, forming a tube 6411. Styrax, p. 751. 



Filaments free from each other. 



Style 1 233. Ericaceae, p. 733. 



Styles 4 240. Ebenaceae, p. 751. 



Herbs; anthers 1-celled 175. Malvaceae, p. 666. 



I. Stamens not more numerous than the corolla lobes L. 



L. Stamens of the same number as the corolla lobes and opposite them. 



Corolla appendaged with scales inside; ovary 5-celled; trees or shrubs 



239. Sapotaceae, p. 750. 



Corolla not appendaged with scales inside; ovary 1-celled; herbs 



237. Primulaceae, p. 744. 



L. Stamens alternate with the corolla lobes or fewer M. 

 M. Ovary free from the calyx tube (superior) N. 

 N. Corolla regular O. 



O. Stamens as many as the corolla lobes P. 

 P. Ovaries more than 1, or if 1, deeply lobed Q. 

 Q. Ovaries 2, or if 1, 2-horned. 



Stamens united 248. Asclepiadaceae, p. 764. 



Stamens distinct. 



Stipules or stipular membrane or line between opposite leaves; 



ovary 2-horned 245. Loganiaceae, p. 754. 



Stipules none; ovaries 2 247. Apocynaceae, p. 760. 



