* Fruit a silique or pod.
(3) Diplotaxis - calyx spreading; pod compressed; seeds ovaloblong in two rows.
** Fruit a silicule or pouch.
(4) Senebiera - pouch kidney-shaped, 2-celled, entire or notched so as to be almost two-lobed; cells one-seeded.
* Calyx with 2-4 scales or bracts at its base.
** Calyx without basal scales.
(6) Saponaria - calyx tubular, naked at the base; petals clawed, two-cleft; stamens ten; stigmas two; capsule one-celled; seeds globose or reniform.
(7) Geranium - stamens ten; fruit beaked, separating into five one-seeded capsules, each with a long awn, glabrous internally, and ultimately recurved.
(8) Erodium - stamens five fertile; fruit beaked, separating into five one-seeded capsules, each with a long awn, bearded internally, and becoming spirally twisted.
(9) Hypericum - calyx five-parted or five-sepaled; styles three; capsule more or less perfectly three-celled.
(10) Malva - calyx surrounded by an involucre of three leaves; styles numerous; carpels numerous, one-seeded, arranged in a circle.
(11) Althsea - calyx surrounded by an involucre having from six to nine divisions; fruit one-seeded, collected into a five-lobed head.
* Stamens inonadelphous.
(12) Ulex - calyx coloured, with two bracts, two-lipped; pod ovaloblong, turgid, few-seeded.
(13) Ononis - calyx campanulate, five-cleft, with linear segments; standard large, streaked; keel pointed; pod turgid, ses- sile, few-seeded.
** Stamens diadelphous.
(14) Melilotus - calyx tubular, five-toothed; corolla deciduous; keel simple; wings shorter than the standard; pod longer than the calyx, one or few-seeded, indehiscent.
(15) Trifolium - calyx tubular, five-cleft; corolla persistent; keel shorter than both wings and standard; pod small, in-dehiscent, shorter than the-calyx, 1-2 rarely 3-4-seeded.
(16) Sedum - sepals five, cohering at the base, often foliaceous; petals five, spreading; stamens ten.
(17) Parnassia - calyx deeply five-cleft; petals five; stamens five, accompanied by five scales, each having a tuft of globular-headed filaments.