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.