46. Oleaceæ.—Trees or shrubs with opposite leaves; and small, regular flowers. Sepals and petals 4, sometimes absent. Stamens 2. Fruit a berry or a samara. (The Olive Family.)
47. Apocynaceæ.—Slender, prostrate shrubs, with milky sap; opposite, evergreen, entire leaves; and conspicuous, regular, purple flowers. Sepals, petals, and stamens 5. Corolla salver-shaped. (The Periwinkle Family.)
48. Gentianaceæ.—Bitter herbs with opposite, simple, entire leaves; and regular, conspicuous flowers. Sepals, petals, and stamens 4 to 10. Carpels 2. Fruit a capsule. (The Gentian Family.)
49. Convolvulaceæ.—Herbs, generally twining, with alternate, simple leaves (sometimes absent); and mostly conspicuous, regular flowers. Sepals, petals, and stamens 4 or 5. Ovary two-or four-celled. Fruit a four-seeded capsule. (The Bindweed Family.)
50. Solanaceæ.—Herbs or shrubs with alternate leaves, and axillary cymes of regular flowers. Sepals, petals, and stamens 5. Ovary two-celled. Fruit berry-like or a capsule, many seeded. (The Nightshade Family.)
51. Scrophulariaceæ.—Herbs with mostly irregular, lipped flowers. Sepals and petals 4 or 5. Stamens 2, or 4, two longer than the others. Carpels 2. Fruit a many-seeded capsule. (The Figwort Family.)
52. Orobanchaceæ.—Fleshy, brown, parasitic plants, with scattered scale-leaves; and mostly brownish, irregular flowers. Sepals 4 or 5. Petals 5, lipped. Stamens 4, two longer than the others. Carpels 2. Fruit a one-chambered, many-seeded capsule. (The Broom-rape Family.)
53. Verbenaceæ.—An erect, branched herb, with opposite leaves; and a compound spike of small, irregular flowers. Sepals and petals 5. Corolla lipped. Stamens 4, two longer than the others. Ovary four-celled. Fruit of 4 nutlets. (The Vervain.)
54. Labiatæ.—Herbs, mostly aromatic, with square stems, opposite leaves, and whorls or cymes of irregular flowers. Sepals and petals 5. Corolla usually lipped. Stamens 4 (rarely 2), two longer than the others. Fruit of 4 one-seeded nutlets. (The Dead Nettle Family.)
55. Boraginaceæ.—Herbs, mostly rough, with alternate, simple leaves; and spikes of conspicuous, regular flowers. Sepals, petals, and stamens 5. Carpels 2. Fruit of 4 one-seeded nutlets. (The Borage Family.)