: any of a genus (Mirabilis) of chiefly American annual or perennial herbs (family Nyctaginaceae, the four–o'clock family) having apetalous flowers with a showy involucre simulating a calyx especially : a garden plant (M. jalapa) with fragrant yellow, red, or white flowers opening late in the afternoon.
any of a genus (Mirabilis) of chiefly tropical American plants of the four–o'clock family, bearing petal-less flowers and, often, brightly colored leaves; esp., a garden plant (M. jalapa) with long-tubed blossoms that generally open at about 4:00 p.m.
Four–o'clock is a quick-growing species up to one metre (three feet) tall, with oval leaves on short leafstalks. The stems are swollen at the joints. The plant is .
four–o'clock plant (Mirabilis jalapa) See PARTIAL DOMINANCE. Source for information on four–o'clock plant: A Dictionary of Plant Sciences dictionary.
Four O'Clock plants have a long history of cultivation and use around the world as well as serve many useful functions, with more to experiment .
A plant of the genus Mirabilis. There are about half a dozen species, natives of the warmer parts of America. The common four–o'clock is M. Jalapa. Its flowers .
Mirabilis oblongifolia, mountain four o'clock – leafy wildflower with lavender-pink flowers that open in the evening and remain through cool part of the next day; .