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bitterroot
Bitterroot (''Lewisia rediviva'' Pursh) is a small perennial herb in the Portulacaceae or purslane family. It is found in western North America from low to moderate elevations on grassland, open bushland and forest. A small species of dry rocky or gravelly soils, it bears a single pink to lavender to white flower.
==Description==
The plant is a low-growing perennial plant with a fleshy taproot and a simple or branched base. The flower stems are leafless, tall, bearing at the tip a whorl of 5–6 linear bracts which are 5–10 mm long. A single flower appears on each stem with 5–9 oval-shaped sepals.〔 They range in color from whitish to deep pink or lavender. Flowering occurs from April through July.〔 The petals (usually about 15) are oblong in shape and are long.〔 At maturity, the bitterroot produces egg-shaped capsules with 6–20 nearly round seeds.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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