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''Mirabilis nyctaginea'' is a species of flowering plant in the four o'clock family known by several common names, including wild four o'clock, heartleaf four o'clock, and heartleaf umbrella wort. Four-o'-clock is native to the central section of North America, and it occurs elsewhere as an introduced species, including parts of Europe. Its exact native range is obscure, and it is often weedy throughout its range, spreading into disturbed habitat easily. Four-o'-clock is a hairy to hairless perennial herb growing erect to over a meter in maximum height. The leaves are oppositely arranged mainly on the lower two thirds of the plant below the upper forkings of the stem. Each thin green leaf has an oval or heart-shaped blade up to 10 centimeters long. The flowers occur in leaf axils on the upper branches. A cluster of 3 to 5 flowers blooms in a bell-shaped involucre of five partly fused bracts. Each five-lobed, funnel-shaped flower is about a centimeter wide and magenta or pink to nearly white in color. The flowers open for only a few hours and drop, leaving the shaggy-haired developing fruits in the drying, papery cup of bracts. The root is a thick, fleshy taproot. Four-o'-clock is host to the larvae (caterpillars) of several micromoths: ''Embola ionis'' is a stem borer, ''Neoheliodines cliffordi'' and ''N. nyctaginella'' are leaf skeletonizers, and ''Aetole tripunctella'' is a leaf miner.〔(Profile of the family Heliodinidae ) in the (Illustrated Guide to Microlepidoptera )〕 == Traditional uses == Mirabilis nyctaginea was called ''Kactáhkata'' in the Skiri Pawnee language. "Its root, yellow and sweet, was used to treat coughs. Also used in powdered form as a remedy for sore mouth in babies and in tea form by women after childbirth to reduce abdominal swelling." 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mirabilis nyctaginea」の詳細全文を読む スポンサード リンク
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