ANALYTICAL KEY. 21 



Leaves not pellucid-punctate. 



Tree, with pinnate leaves. . Ailanthus, in SIMARUBACE.E, 107 



Low shrub, with pinnate leaves. Xanthorrhiza, in RAXUXCULACE.E, 48 

 Herbs, not fleshy. . .... RANUNCULACE^E, 34 



Herbs, with thick fleshy leaves CRASSULACE.E, 176 



Stamens unconnected, inserted on the calyx. 



Just twice as many as the pistils (flower symmetrical). CKASSULACE^E, 176 



Not just the number or twice the number of the pistils. 



Leaves without stipules SAXIFRAGACE.E, 168 



Leaves with stipules ROSACE.E, 150 



* * Ovaries 2-5, somewhat united at the base, separate above. 



Leaves punctate with pellucid dots RUTACE.-E, 106 



Leaves not pellucid-punctate. 



Shrubs or trees with opposite leaves. . . . SAPINDACE.E, 115 



Terrestrial herbs; the carpels fewer than the petals. SAXIFRAGACEJE, 168 



#_ * * Ovaries or lobes of ovary 3 to 5, with a common style. GERAMACEJE, 102 



# * * * Ovary only one, and 



-H- Simple, with one parietal placenta. LEGUMIJTOS.E, 122 

 -t- -- Compound, as shown by the number of cells, placentae, styles, or stiymas. 

 Ovary one-celled. 



Corolla irregular ; petals 4 ; stamens 6. . . . FUMARIACE^E, 59 



Corolla irregular ; petals and stamens 5 VIOLACE<E, 78 



Corolla regular or nearly so. 



Ovule solitary; shrubs or trees; stigmas 3. AXACARDIACE.E, 118 



Ovules solitary or few ; herbs. . . Some anomalous CRUCIFER^E, 61 

 Ovules more than one, in the centre or bottom of the cell. 



Petals not inserted on the calyx. . . . CARYOPHYLLACE^E, 82 

 Petals on the throat of a bell-shaped or tabular calyx. LYTHRACE.E, 184 

 Ovules several or many, on two or more parietal placentae. 



Leaves punctate with pellucid and dark dots. HYPERICACEJE, 92 



Leaves beset with reddish gland-tipped bristles. DROSERACE^E, 178 

 Leaves neither punctate nor bristly-glandular. 



Sepals 5, very unequal or only 3. ... CISTACE^E, 76 



Sepals and petals 4 ; stamens 6. . . Anomalous CRUCIFERJE, 61 

 Sepals and petals 5 ; stamens 5 or 10. 



Ovary and stamens raised on a stalk. PASBIFLORACE.E, 194 



Ovary sessile SAXIFRAGACE^:, 168 



Ovary 2 - several-celled. 

 Flowers irregular. 



Anthers opening at the top, 



Six or eight and 1-celled; ovary 2-celled, 2-ovuled. POLYGALACE^E, 120 

 Ten and 2-celled ; ovary 5-celled. Rhododendron, in ERICACEAE, 286 

 Anthers opening lengthwise. 



Stamens 12 and petals 6 on the throat of a tubular inflated 



or gibbous calyx. . . . Cuphea, in LYTHRACE.S, 186 



