Key. 



Pistil I as to the ovary, styles and stigmas sometimes several. 



Ovary simple, i-celled, 2-ovuled. Rosacea, page 56. 



Ovary simple; numerous ovules on 1 parietal placenta; leaves lobed and 



peltate. Podophyllum in Berberidace.k, page 43 



Ovary compound, i-celled. 



Placenta central. Portulacace^, page 36. 



Placentae parietal, 2 or more. PapaveracE/E, page 45 



Ovary 2-several-cened, free from the calyx. 



Stamens 5-10 adelphous. Tiliace>e, page 78. 



Stamens monadelphous. Malvace^, page 78. 



Ovary 2-5-celled; calyx borne at the summit, trees or shrubs, with stipulate 



leaves. Rosacea, page 56, 



Plants without stipulate leaves. Saxifkagace^, page 54. 



(2) Stamens of the same number as the petals and opposite them. 



Ovary i-celled; styles-cleft; sepals 2. PortulacacE/e, page 36, 



Ovary i-celled; style simple. Berberidace*, page 42, 



Ovary 2-6-celled. 



Calyx lobes mostly obsolete; plants climbing by coiled tendrils, or sucker- 

 like disks. Vitace«, page 76, 



Calyx 4-5-cleft; small shrubs or trees. Rhamnace/E, page 75. 



(3) Stamens not more than twice as many as the petals; alternate with them when of 



the same number, 

 (tf) Ovary superior; not adherent to the calyx. 

 Pistils 2 or more, and separate. 



Stamens coherent by their anthers, and united to a fleshy disk sur- 

 mounting the two pistils. Asclepiadace^, page 91. 

 Stamens distinct on the receptacle. Leaves punctate. 



RuTACE,c, page 71. 

 Stamens separate on the receptacle. Leaves not punctate. 



Ranunculace^, page 38. 

 Pistils 2-5, somewhat united at the bases of the ovaries; trees or shrubs. 



SapindacEvE, page 74. 



Pistil I and simple, with i parietal placenta, or sometimes 2-celled, with 



a row of ovules in each cell. Leguminos/E, page 65. 



Pistil I, compound, as shown by the number of cells, placentse, styles, or 



stigmas. 



Ovary I-celled. 



Corolla irregular; petals 4, somewhat united; stamens 6, and 

 diadelphous. Fumariace^, page 46. 



Corolla irregular; petals and stamens 5; placentae 3, parietal. 



VioLACE/E, page 79. 

 Corolla nearly or quite regular. 



Ovule I ; styles or stigmas 1-3. Shrubs or trees. 



Anacardiace^, page 73. 

 Ovules more than i on a central or basal placenta; herbs 

 with tumid nodes. Carvophvllace^, page 37. 



Ovary 2 or more celled. 



Flowers irregular; ovary 3-celled. Sapindace^e, page 74. 



Flowers nearly or quite regular. 



Stamens tetradynamous (sometimes fewer than 6) ; petals 4. 



Crucifee^, page 47. 



