22. Linaceæ (p. 101). Flowers regular, usually 5-merous. Capsule not lobed, mostly 5-valved, spuriously 10-celled, 10-seeded. Stamens united at base. Disk none or 5 minute glands. Herbs, with entire alternate or opposite leaves; stipules gland-like or none. 23. Geraniaceæ (p. 102). Flowers regular or irregular, 5-merous or 3-merous as to the stamens and pistils. Ovary 3--5-lobed, the cells 1--few-ovuled, and axis persistent. Disk of 5 glands or none. Herbs, with often lobed or divided mostly alternate leaves, with or without stipules. 24. Rutaceæ (p. 106). Flowers mostly regular, 3--5-merous, diœcious or polygamous in our genera. Ovary 2--5-lobed or the carpels nearly distinct, upon a glandular disk; cells 2-ovuled. Mostly shrubs or trees, with glandular-punctate compound leaves, without stipules. [*] 2. Ovules (1 or 2) pendulous, the rhaphe away from the axis; disk none and ovary not lobed. 25. Ilicineæ (p. 107). Flowers small, diœciously polygamous, axillary, 4--8-merous. Fruit a 4--8-seeded berry-like drupe. Shrubs or trees, with simple alternate leaves and no stipules. [*] 3. Ovules (1 or 2 in each cell) erect, the rhaphe toward the axis; disk fleshy, covering the base of the calyx; stamens as many as the petals, at the margin of the disk; flowers perfect or polygamo-diœcious; albumen fleshy; shrubs or trees, with simple leaves (compound in some Vitaceæ). 26. Celastraceæ (p. 109). Sepals and petals imbricated, the stamens alternate with the petals. Fruit 2--5-celled; seeds arilled. 27. Rhamnaceæ (p. 111). Calyx valvate. Petals small or none. Stamens alternate with the sepals. Fruit 2--5-celled; seeds solitary, not arilled. 28. Vitaceæ (p. 112). Calyx minute. Stamens opposite the valvate caducous petals. Climbing by tendrils opposite the alternate leaves. [*] 4. Ovules (1 or 2) ascending or horizontal, or pendulous from a basal funicle; fleshy disk entire or lobed; stamens 5--10; shrubs or trees, with compound leaves (simple in Acer) and mostly polygamo-diœcious and often irregular flowers; petals imbricate (sometimes none in Sapindaceæ). 29. Sapindaceæ (p. 115). Flowers mostly unsymmetrical or irregular. Ovary 2--3-celled and -lobed. 30. Anacardiaceæ (p. 118). Flowers regular, 5-androus. Ovary 1-celled, becoming a small dry drupe. Leaves alternate; juice milky or resinous. [*] 5. Ovules solitary, pendulous from the summit of the 2-celled ovary; disk none; flowers irregular (subpapilionaceous), hypogynous; stamens monadelphous or diadelphous; anthers 1-celled, opening by an apical pore. 31. Polygalaceæ (p. 120). Herbs, with perfect flowers and alternate or opposite or whorled entire leaves. Stamens 6--8. Seed carunculate.