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Otanthus
''Otanthus'' is a genus of flowering plants in the chamomile tribe within the daisy family.〔Hoffmannsegg, Johann Centurius von ex Link, Johann Heinrich Friedrich. 1809. Flore Portugaise ou description de toutes les plantes qui croissent naturellement en Portugal 2: 364〕
The only known species is the Cotton weed plant ''(Otanthus maritimus).''〔 It is a small pioneering perennial that grows in the dune areas throughout the Mediterranean and exerts a stabilizing action on the sandy soils. A thick white down covers both the stems and the small oval, slightly saw-toothed alternate leaves. The globose flower heads, with their short peduncles, are composed of an envelope of white-wooly scales around tubular
yellow flowers that are visible from June through to September.〔(Altervista Flora Italiana, Santolina delle spiagge, ''Achillea maritima'' (L.) Ehrend. & Y. P. Guo )〕
The generic name is derived from the Greek words otos (ear) and anthos (flower). This refers to the form of the corolla, which is composed of three membranous bracts that create a profile similar to that of a human ear.
==References==
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「Otanthus」の詳細全文を読む
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