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Equisetum laevigatum : ウィキペディア英語版 | Equisetum laevigatum
''Equisetum laevigatum'' is a species of horsetail known by the common names smooth scouring rush and smooth horsetail. This plant is native to much of North America except for northern Canada and southern Mexico. It is usually found in moist areas in sandy and gravelly substrates. It may be annual or perennial. It grows narrow green stems sometimes reaching heights exceeding 1.5 meters. The leaves at the nodes are small, scale-like brownish sheaths and there are occasionally small, spindly branches. The stems are topped with rounded cone-shaped sporangia. ==External links==
*(Jepson Manual Treatment ) *(USDA Plants Profile ) *(Photo gallery )
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「Equisetum laevigatum」の詳細全文を読む
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