[++][++][++] 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.