7. Fumariaceous Plants. Fumariaceae

(41) Fumaria - upper petal spurred at the base; fruit an indehiscent one-seeded nut.

(42) Corydalis - upper petal spurred at the base; pod twovalved, many-seeded.

8. Frankeniaceous Plants. Frankeniaceae

(43) Prankenia - sepals combined into a tubular calyx, with four or five teeth; petals four or five, with long claws and spreading laminas.

9. Tamaricaceous Plants. Tamaricaceae

(44) Tamarix - flowers in racemes; stamens as many or twice as many as the petals.

10. Caryophyllaceous Plants. Caryophyllaceae

* Sepals united into a cylindrical tube; stamens united below into a tube.

† Calyx with two to four scaly bracts at the base, or sometimes covered by them.

(45) Dianthus - calyx five-toothed; petals five, clawed; styles two; capsule one-celled, many-seeded, opening at the top with four valves.

† † Calyx without scales at the base.

(46) Silene - calyx five-toothed; petals five, clawed; styles three; capsule more or less completely three-celled, opening at the top with six valves.

(47) Lychnis - calyx five-toothed; petals five, clawed; styles five; capsule one- or half five-celled, opening at the top with five or ten teeth.

** Sepals distinct or only cohering at the base; stamens free. † Valves of the capsule equalling the styles.

(Is) Sagina - sepals four or five, spreading when in fruit; petals four or five or none; stamens four or five or twice as many; styles four or five; capsules four- or five-valved, many-seeded.

(49) Alsine - sepals five or four; petals five or four, entire or slightly emarginate; styles three; capsules opening witli three valves.

†† Valves or teeth of the capsule twice as many as the styles.

(50) Arenaria - sepals five; petals five, entire or slightly emargiuate; styles two or three; capsule opening with four to six valves.

(51) Stellaria - sepals five; petals five, bifid; styles three; capsule opening with six valves or teeth, many-seeded.

(52) Malachium - sepals five; petals five, bifid or entire; styles five; capsules opening with five bifid, not deeply-cleft, valves.

11. Illecebraceous Plants. Illecebraceae

* Capsule one-celled, many-seeded.

(53) Spergula - sepals and petals five, entire; stamens ten or five: styles five; capsule five-valved; leaves apparently whorled.

(54) Spergularia - sepals five, flattish; petals five, entire; stamens ten, sometimes only five; styles usually three; capsule three- to five-valved; leaves opposite.

(55) Polycarpon - sepals keeled on the back, hooded at the end; petals five, minute, emarginate; stamens three to five; styles three; capsule three-valved.

** Capsule one-seeded.

(56) Corrigiola - petals five, oblong, equalling the sepals; stamens five; stigmas three, sessile.

(57) Illecebrum - sepals thickened, horned at the back; petals five subulate, or wanting; stamens five; stigmas two.