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The narrowleaf four o'clock (Mirabilis linearis) belongs to Nyctaginaceae (the Four o'clock family). It is a perennial herb that is native to the western United States. This herb grows on roadsides, prairies, woodlands, and up to 75 cm. The leaves are linear, gray-green, up to 12 cm long but less than 1.5 cm across, covered by very short hairs. The flowers bloom in clusters at the end of the stem and from the upper leaf axils from May to August. They are deep pink in color or less often white, with five split petals and five projecting pink stamens at the center, topped by yellow anthers. The involucre forms an inflated, papery chamber when in fruit.
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