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.
[*] 1. Ovary superior (though sometimes enclosed within the calyx), 1-celled with a solitary basal ovule (several-celled in Phytolaccaceæ); embryo coiled or curved (nearly straight in Polygonaceæ) in or about mealy albumen (albumen none in some Chenopodiaceæ); herbs.
[+] Fruit the hardened or membranous closed base of the corolla-like perianth enclosing a utricle.
84. [Nyctaginaceæ] ([p. 425]). Perianth tubular or funnelform. Stamens hypogynous. Fruit ribbed or winged. Leaves opposite; stipules none.
[+][+] Fruit a utricle; perianth mostly persistent, small, 4–5-lobed or -parted, or none.
85. [Illecebraceæ] ([p. 426]). Perianth herbaceous. Stamens perigynous. Leaves opposite; stipules scarious (none in Scleranthus).
86. [Amarantaceæ] ([p. 427]). Flowers sessile, bracteate, the bracts (usually 3) more or less dry and scarious, as well as the 3–5 distinct sepals. Stamens 1–5, hypogynous. Utricle indehiscent or circumscissile. Embryo annular. Leaves mostly alternate, entire; stipules none.