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''Hypericum calycinum'' is a species of prostrate or low-growing shrub in the flowering plant family Hypericaceae. Widely cultivated for its large yellow flowers, its names as a garden plant include Rose-of-Sharon in Britain and Australia, and Aaron's beard, Great St-John's wort, and Jerusalem star. Grown in Mediterranean climates, widely spread in the Strandja Mountains along the Bulgarian and Turkish Black Sea coast. ==Description== It is a low, creeping, woody shrub to about 1 m tall and 1–2 m wide but often smaller. The green, ovate leaves grow in opposite pairs. The solitary flowers are 3–5 cm in diameter, a rich yellow, with five petals and numerous yellow stamens. It is indigenous to southeast Europe and southwest Asia. It is a popular, semi-evergreen garden shrub with many named cultivars and hybrids derived from it. In North America the name Rose of Sharon is applied to a species in a different order, ''Hibiscus syriacus.'' This species is capable of producing the same medicinally active components as ''H. perforatum'' (hyperforin etc.), though in different ratios, with adhyperforin predominating, and a low level of hyperforin present. 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「Hypericum calycinum」の詳細全文を読む スポンサード リンク
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