Flowers irregular. Sepals 5. Disc present. Shrubs. _Astrocarpus_, =89. Resedaceae=. 467. Disc present. Sepals 2-5. Albumen scanty or wanting. Stem woody. =116. Simarubaceae.= Disc absent. Albumen abundant, rarely scanty or wanting, but then sepals 6 or more. 468 468. Flowers unisexual. Sepals 6 or more. Stamens usually as many as petals or fewer. Fruits drupaceous. Stem usually climbing. Flowers usually in racemes. =80. Menispermaceae.= Flowers hermaphrodite or polygamous, rarely unisexual, but then sepals 2-3. Stamens usually more than petals. Albumen abundant. 469 469. Stem woody. Leaves entire or toothed. Sepals 2-3. Albumen ruminate. =81. Anonaceae.= Stem herbaceous or woody at the base only, rarely throughout, but then leaves lobed or dissected and sepals 4 or more. Albumen uniform. =78. Ranunculaceae.= 470. (457.) Leaves stipulate. 471 Leaves exstipulate. 474 471. Petals and stamens perigynous. =103. Rosaceae.= Petals and stamens hypogynous. 472 472. Disc one-sided, scale-like. Ovary stalked. Stamens 10-15. Flowers irregular, 5-merous. Seeds exalbuminous. Herbs. Leaves undivided. _Caylusea_, =89. Resedaceae=. Disc stalk-like or wanting. Seeds albuminous. Shrubs or trees. 473 473. Calyx with valvate, corolla with contorted aestivation. Stamens 10 or more. Petal-like staminodes within the stamens 5-10. Flowers regular, 5-merous. =144. Sterculiaceae.= Calyx and corolla with imbricate aestivation. Stamens numerous. Leaves undivided. =146. Dilleniaceae.= 474. Stamens as many or twice as many as the petals. 475 Stamens numerous, not exactly twice as many as the petals, hypogynous. Seeds with abundant albumen. 479 475. Sepals 2-3. Petals 3-6. Stamens 6-12, hypogynous. Albumen abundant. Shrubs or trees. Leaves alternate, undivided. =81. Anonaceae.= Sepals 4 or more, rarely 3, but then stamens 3. 476 476. Stem herbaceous or woody at the base, rarely throughout, but then, as usually, ovules numerous. Albumen scanty or wanting. =95. Crassulaceae.= Stem woody throughout. Ovules 2. 477 477. Leaves pinnate, with 3 or more leaflets, alternate, rarely dotted and then stamens 10. Flowers 5-merous. Ovules ascending, straight. Seeds with an aril. =104. Connaraceae.= Leaves simple or compound; in the latter case, as usually, leaves translucently dotted and stamens 3-5. Ovules inverted. Seeds without an aril. 478 478. Style terminal or nearly so. Stamens 3-5. Seeds albuminous, with a thick and hard coat. _Fagara_, =115. Rutaceae=. Styles basal or nearly so. Stamens 5-10. Seeds exalbuminous, with a thin coat. Leaves undivided. _Suriana_, =116. Simarubaceae=. 479. Sepals 2-3. Petals 3-6. Albumen ruminate. Shrubs or trees. Leaves undivided. =81. Anonaceae.= Sepals 4-6, imbricate in bud. 480 480. Seeds with an aril. Sepals persistent. Shrubs or trees. Leaves undivided. =146. Dilleniaceae.= Seeds without an aril. Herbs or undershrubs. Leaves more or less deeply divided or compound. =78. Ranunculaceae.=