ANALYTICAL KEY. 23 



C Stamens not more than twice as many as the petals, when of just the number of 



the petals then alternate with them. 



1. Calyx free from the ovary, i. e. the ovary wholly superior. 



* Ovaries 2 or more, separate. 



Stamens united with each other and with a large and 



thick stigma common to the two ovaries. Asclepiadace-e, 394 



Stamens unconnected, on the receptacle, free from the calyx. 



Leaves punctate with pellucid dots Rutaceje, 109 



Leaves not pellucid-punctate. 



Tree, with pinnate leaves. . . Ailanthus, in Simarubace^e, 110 



Low shrub with pinnate leaves. Zanthorhiza, in Ranunculace^:, 34 



Herbs, not fleshy Ranunculace^e, 34 



Herbs, with thick fleshy leaves. .... Crass ulace^e, 171 



Stamens unconnected, inserted on the calyx, 

 Just twice as many as the pistils (flower symmetrical). Crassulace^j, 171 

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



Leaves without stipules Saxifragace^, 163 



Leaves with stipules Rosacea, 148 



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



Leaves punctate with pellucid dots Rutace^e, 109 



Leaves not pellucid-punctate. 



Shrubs or trees with opposite leaves SAPiNDACBiE, 116 



Terrestrial herbs : the carpels fewer than the petals. Saxifragace^e, 163 



* * * Ovaries or lobes of ovary 3 to 5, with a common style. Geraniace^e, 105 

 *= * # # Ovary only one, and 

 -t- Simple, with one parietal placenta. Leguminos^j, 123 

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



Ovary one-celled. 



Corolla irregular : petals 4 : stamens 6. Fumariace^, 60 



Corolla irregular : petals and stamens 5. Violace^, 76 



Corolla regular or nearly so. 



Ovule solitary : shrubs or trees : stigmas 3. Anacardiace^, 111 



Ovules solitary or few : herbs. . . Some anomalous Crucifer^:, 62 

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

 Petals not inserted on the calyx. . . . Caryophyllaceje, 87 

 Petals on the throat of a bell-shaped or tubular calyx. Lythrace^e, 182 

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



Leaves punctate with pellucid and dark dots. Hypericace^e, 83 



Leaves beset with reddish gland-tipped bristles. Droserace^:, 82 



Leaves neither punctate nor bristly-glandular. 



Sepals 5, very unequal or only 3. Cistace^, 80 



Sepals and petals 4 : stamens 6. Anomalous Crucifer^), 62 



Sepals and petals 5 : stamens 5 or 10. 



Ovary and stamens raised on a stalk. . Passiflorace^j, 185 



Ovary sessile. Saxifragacejb, 163 



