Nyctaginaceæ.
Four-O’Clock Family.
Mirabilis Jalapa, L. (M. longiflora, Blanco.)
Nom. Vulg.—Maravillas, Suspiros, Sp.-Fil.; Gilalas, Tag.; Four O’Clock, Marvel of Peru, Eng.
Uses.—The root is purgative and possesses the same active principles, the same properties and is given in the same dose as jalap. According to the experience of Shoolbred, Hunter, W. O’Shaughnessy and Ainslie, its purgative action is weak and uncertain and therefore unworthy of use as a substitute for jalap. The bruised leaves are used as poultices to hasten suppuration, but according to Waring they are capable of causing dermatitis.
Botanical Description.—The flowers open toward the end of the day and close again at sunrise. The root is blackish and spindle-shaped. The stem smooth, branches forked. Leaves opposite, lanceolate-cordate, acute, somewhat downy along the borders and the upper surface. Petioles short. Flowers fragrant, almost constantly blooming, of different colors even in the same plant, terminal, in umbels. Pedicels very short. Calyx persistent, 5-toothed. Corolla superior, very long, its tube downy, funnel-form, limb 5-lobed. Stamens 5, longer than the corolla. Style longer than the stamens. Stigma globose. Nut small, black, globose, many-ribbed, full of a mealy substance.
Habitat.—Common in gardens.