. Botany, an elementary text for schools. Botany. 328 THE KINDS OF PLANTS 6. MARRtBIUM. Horehodnd. Erect perennials, with white-woolly aspect: calyx nearly equally 5-10- toothed, the teeth very sharp: corolla 2-lipped, the upper lip erect and notched, the lower one spreading and 3-lobed: stamens 4, included in the corolla-tube. M. vulgare, Linn. Common horehonnd. Leaves broad-ovate and cre- nate: flowers small, white, in dense whorls. Europe, but common. 7. LEONtTEUS. Motheewoet. Erect perennials with green aspect: calyx about equally 5-toothed, the teeth becoming spine-like: corolla 2-lipped,
. Botany, an elementary text for schools. Botany. 328 THE KINDS OF PLANTS 6. MARRtBIUM. Horehodnd. Erect perennials, with white-woolly aspect: calyx nearly equally 5-10- toothed, the teeth very sharp: corolla 2-lipped, the upper lip erect and notched, the lower one spreading and 3-lobed: stamens 4, included in the corolla-tube. M. vulgare, Linn. Common horehonnd. Leaves broad-ovate and cre- nate: flowers small, white, in dense whorls. Europe, but common. 7. LEONtTEUS. Motheewoet. Erect perennials with green aspect: calyx about equally 5-toothed, the teeth becoming spine-like: corolla 2-lipped, the upper lip somewhat arched and entire, the lower spreading and 3-lobed: stamens 4, ascending under the upper lip: nutlets 3-angled. L. Cardiaca, Linn. Common motlierwort. Tall: leaves rounded and lobed : corolla purple, the upper lip bearded : flowers in axillary whorls. Introduced from Europe. Common. XXI. CONVOLVULACE^. Convolvulus Family. Herbs, mostly twining, with alternate chiefly simple leaves: flowers regular, 5-merous, the tubular or trumpet-shaped corolla mostly twisted in the bud, the stamens 5 and borne on the corolla: ovary commonly 1-, mostly 2-loeuled, with 2 ovules in each locule, becoming a globular capsule in fruit (which is sometimes 4-loculed by the insertion of a false partition). The family contains between 30 and 40 genera, and nearly 1,000 species. Common convolvulaeeous plants are morning-glory, cypress vine, sweet potato, bindweed, dodder. A. Plants with normal foliage 1. Ipomcea AA. Plants leafless, parasitic 2. Cuscuta 1. IPOMCEA. MORNING-GLOEY. Mostly twining, with showy flowers on axillary peduncles: corolla with a long tube and a flaring limb: pistil 1, with one style, and the stigma 2-3-lobed: fruit a capsule, with 1-seeded locules. a. Leaves compound, with thread-like divisions. I. Qudmoclit, Linn. Cypress vine. Fig. 485. Leaves pin- nate: flowers solitary, red, small, narrow-limbed, with pro- jecting style and stamens. Tropical America, but
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