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. ASCLEPIADACEÆ, 338 Stamens unconnected, on the receptacle, free from the calyx. Leaves punctate with pellucid dots. RUTACEÆ, 106 Leaves not pellucid-punctate. Tree, with pinnate leaves. Ailanthus, in SIMARUBACEÆ, 107 Low shrub, with pinnate leaves. Xanthorrhiza, in RANUNCULACEÆ, 48 Herbs, not fleshy. RANUNCULACEÆ, 34 Herbs, with thick fleshy leaves. CRASSULACEÆ, 176 Stamens unconnected, inserted on the calyx. Just twice as many as the pistils (flower symmetrical). CRASSULACEÆ, 176 Not just the number or twice the number of the pistils. Leaves without stipules. SAXIFRAGACEÆ, 168 Leaves with stipules. ROSACEÆ, 150 [*][*] _Ovaries 2--5, somewhat united at the base, separate above._ Leaves punctate with pellucid dots. RUTACEÆ, 106 Leaves not pellucid-punctate. Shrubs or trees with opposite leaves. SAPINDACEÆ, 115 Terrestrial herbs; the carpels fewer than the petals. SAXIFRAGACEÆ, 168 [*][*][*] _Ovaries or lobes of ovary 3 to 5, with a common style._ GERANIACEÆ, 102 [*][*][*][*] _Ovary only one, and_ [+] _Simple, with one parietal placenta._ LEGUMINOSÆ, 122 [+][+] _Compound, as shown by the number of cells, placentæ, styles, or stigmas._ Ovary one-celled. Corolla irregular; petals 4; stamens 6. FUMARIACEÆ, 59 Corolla irregular; petals and stamens 5. VIOLACEÆ, 78 Corolla regular or nearly so. Ovule solitary; shrubs or trees; stigmas 3. ANACARDIACEÆ, 118 Ovules solitary or few; herbs. Some anomalous CRUCIFERÆ, 61 Ovules more than one, in the centre or bottom of the cell. Petals not inserted on the calyx. CARYOPHYLLACEÆ, 82 Petals on the throat of a bell-shaped or tubular calyx. LYTHRACEÆ, 184 Ovules several or many, on two or more parietal placentæ. Leaves punctate with pellucid and dark dots. HYPERICACEÆ, 92 Leaves beset with reddish gland-tipped bristles. DROSERACEÆ, 178 Leaves neither punctate nor bristly-glandular. Sepals 5, very unequal or only 3. CISTACEÆ, 76 Sepals and petals 4; stamens 6. Anomalous CRUCIFERÆ, 61 Sepals and petals 5; stamens 5 or 10.