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・ Symphyotrichum
・ Symphyotrichum ascendens
・ Symphyotrichum campestre
・ Symphyotrichum chilense
・ Symphyotrichum cordifolium
・ Symphyotrichum defoliatum
・ Symphyotrichum depauperatum
・ Symphyotrichum dumosum
・ Symphyotrichum eatonii
・ Symphyotrichum ericoides
・ Symphyotrichum falcatum
・ Symphyotrichum frondosum
・ Symphyotrichum georgianum
・ Symphyotrichum greatae
・ Symphyotrichum laeve
Symphyotrichum lanceolatum
・ Symphyotrichum lateriflorum
・ Symphyotrichum lentum
・ Symphyotrichum novae-angliae
・ Symphyotrichum novi-belgii
・ Symphyotrichum oblongifolium
・ Symphyotrichum oolentangiense
・ Symphyotrichum pilosum
・ Symphyotrichum prenanthoides
・ Symphyotrichum puniceum
・ Symphyotrichum sericeum
・ Symphyotrichum subulatum
・ Symphypleona
・ Symphysa
・ Symphysa amoenalis


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Symphyotrichum lanceolatum : ウィキペディア英語版
Symphyotrichum lanceolatum

''Symphyotrichum lanceolatum'' (syn. ''Aster lanceolatus'') is a species of flowering plant in the aster family, Asteraceae. It is native to Canada and the United States. Common names include panicled aster, tall white aster,〔Dickinson, T., et al. (2004) ''The ROM Field Guide to Wildflowers of Ontario''. Toronto: Royal Ontario Museum. p. 190.〕 eastern line aster, lance-leaf aster, narrow-leaf Michaelmas daisy, and white-panicle aster.〔(''Symphyotrichum lanceolatum''. ) Germplasm Resources Information Network (GRIN).〕
==Description==

This perennial herb has a thick, erect stem that often grows 1.5 meters tall or more, sometimes approaching 2 meters. It has a stout rhizome and can spread to form a colony. The leaf blades have winged petioles and may sheath the stem at the bases. The largest, near the base of the plant, are up to about 15 centimeters long. Those higher on the stem are smaller. The lower leaves may have toothed edges. The inflorescence is usually a large, branching array of many flower heads of varying size. There are 16 to 50 ray florets per head, each measuring 3 to 14 millimeters long, in shades of blue, pink, or white. The disc florets bloom yellow and turn purple.〔(''Symphyotrichum lanceolatum''. ) Flora of North America.〕
This species is currently divided into five varieties or two subspecies, depending on the authority.〔

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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