72. Borraginaceæ (p. 360). Leaves mostly entire and plants often rough-hispid; inflorescence commonly scorpioid. Style 1. Ovary 4-ovulate, usually 4-lobed and maturing as 4 separate or separable nutlets, or not lobed, 2--4-celled and separating when ripe into 2 or 4 nutlets. 73. Convolvulaceæ (p. 367). Usually twining or trailing; flowers on axillary peduncles or cymose-glomerate. Corolla 5-lobed or 5-plaited, twisted in the bud. Styles 1 or 2. Ovary 2- (sometimes 3- or spuriously 4-) celled, becoming a globular 4--6-seeded capsule (or ovaries two and distinct in Dichondra). Cotyledons broad-foliaceous. 74. Solanaceæ (p. 373). Style 1. Ovary 2-celled (rarely 3--5-celled), with numerous ovules on axillary placentæ, becoming a pod or berry. Cotyledons narrow. [++][++][++] Corolla more or less bilabiately irregular (sometimes nearly regular), 5-lobed. Fertile stamens 4 and didynamous, or 2. Style 1. Ovary always of two carpels. [a.] Ovules several or many. 75. Scrophulariaceæ (p. 377). Capsule 2-celled, with central placentæ. Seeds small, usually numerous. Herbs; leaves alternate or opposite. 76. Orobanchaceæ (p. 393). Root-parasites with no green foliage. Capsule 1-celled, with 2 simple or double parietal placentæ. Seeds many. 77. Lentibulariaceæ (p. 395). Aquatic or marsh herbs, with scapes or scape-like peduncles, sometimes nearly leafless. Corolla personate and spurred. Capsule globular, 1-celled; placentæ central, free, many-seeded. 78. Bignoniaceæ (p. 398). Large-flowered trees or often climbing shrubs, with usually opposite simple or compound leaves. Capsule 2-celled by a partition between the 2 parietal placentæ. Seeds numerous, large, mostly winged. 79. Pedaliaceæ (p. 399). Herbs, with opposite simple leaves. Ovary 1-celled with two bilamellar parietal placentæ, or 2--4-celled by their union, becoming drupaceous or capsular. Seeds few or many, wingless. 80. Acanthaceæ (p. 399). Herbs, with opposite simple leaves. Capsule 2-celled, loculicidal, with each axile placenta bearing 2--10 flattish seeds. [b.] Cells of the ovary 1--2-ovuled; herbs or low shrubs, with opposite leaves. 81. Verbenaceæ (p. 401). Ovary 2--4-celled, not lobed, the dry or drupaceous fruit separating into 2 or 4 1-seeded nutlets (fruit 1-celled and 1-seeded in Phryma). Style terminal. 82. Labiatæ (p. 403). Ovary deeply 4-lobed around the style, the lobes becoming dry seed-like nutlets. Stems square; aromatic. [+][+] Corolla scarious and nerveless; flowers regular, 4-merous; style 1. 83. Plantaginaceæ (p. 422). Scapose herbs, with perfect or polygamo-diœcious or monœcious flowers in 1--many-flowered spikes. Fruit a circumscissile 2-celled capsule, with one or more peltate seeds in each cell, or an achene. DIVISION III. APETALOUS EXOGENS. The corolla wanting (except in some Euphorbiaceæ), and sometimes also the calyx.