[=][=] Ovary compound (ovaries two in Dichondra), with 2 or 3 (rarely 4 or 5) cells or placentæ; stamens distinct; mostly herbs.
a. Leaves opposite; corolla-lobes 4 or 5 or more.
68. [Loganiaceæ] ([p. 345]). Leaves entire, with stipules or a stipular line joining their bases. Capsule 2-celled, few–many-seeded. Herbs or woody twiners (our species).
69. [Gentianaceæ] ([p. 346]). Glabrous herbs; leaves entire, sessile and simple (except in Menyanthes). Capsule 1-celled with 2 parietal placentæ or the whole inner surface ovuliferous, many-seeded.
b. Leaves alternate (sometimes opposite in Polemoniaceæ and Hydrophyllaceæ); corolla-lobes always 5 in our species.
70. [Polemoniaceæ] ([p. 354]). Capsule usually 3-celled, loculicidal; seeds 1–many in each cell on the stout placental axis. Style 3-cleft or -lobed. Leaves opposite or alternate, simple or compound.
71. [Hydrophyllaceæ] ([p. 357]). Leaves often lobed or divided, and the inflorescence frequently scorpioid. Style 2-parted or 2-lobed. Capsule 1-celled, 2-valved with two parietal or introflexed placentæ, or sometimes 2-celled. Seeds 2 or more on each placenta.
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.