ANALYTICAL KEY. 21 



Leaves not pellucid-punctate. 



Tree, ^vith pinnate leaves. . . Ailanthus, in Simarubace^, 107 



Low slirub, with pinnate leaves. Xantliorrhiza, in Kanunculace^ 48 



Herbs, not fleshy Ranunculace^! 34 



Herbs, with thick fleshy leaves Crassclace.c, 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.i:, 168 



Leaves with stipules Rosace.e, 1.50 



* * 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. . . . Sapixdace.e 115 



Terrestrial herbs ; the carpels fewer than tlie petals. Saxifragace.e,' 168 



»_ * * Ovaries or lobes of ovary 3 to 5, with a common style. Geraxiace.e, 102 

 * * * * Ovary only one, and 

 -»- Simple, icith one parietal placenta. Leguminos.^:, 122 

 H- •*- Compound, as shown by the number of cells, placentce, styles, or stigmas. 

 Ovary one-celled. 



Corolla irregular; petals 4; stamens 6. . . . Fumariace.-e, 59 



Corolla irregular ; petals aud 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.i, 61 

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



Petals not inserted on the calyx. . . . Caryophyllace^, 82 

 Petals on the throat of a bell-shaped or tubular calyx. Lythrace.*:, 184 

 Ovules several or many, on two or more parietal placenta;. 



Leaves punctate with pellucid and dark dots. Hypericace.e 92 



Leaves beset with reddish gland-tipped bristles. Droserace^, 1 78 

 Leaves neither punctate nor bristly-glandular. 



. Sepals 5, very unequal or only 3. . . . Cistace.e, 76 



Sepals and petals 4 ; stamens 6. . . Anomalous Crucifer.e, 61 

 Sepals and petals 5 ; stamens 5 or 10. 



Ovary and stamens raised on a stalk. Passiflorace.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. Poltgalace.e, 120 

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

 Anthers opening lengthwise. 



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



or gibbous calyx. . . . Cuphea, in Lythrace^, 186 



