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Words near each other
・ Ceratophaga vicinella
・ Ceratophallus
・ Ceratophallus kisumiensis
・ Ceratophallus socotrensis
・ Ceratophora
・ Ceratophora erdeleni
・ Ceratophora karu
・ Ceratophryidae
・ Ceratophrys
・ Ceratophya
・ Ceratophyllidae
・ Ceratophyllidia
・ Ceratophyllidia papilligera
・ Ceratophyllum
・ Ceratophyllum demersum
Ceratophyllum echinatum
・ Ceratophyllum muricatum
・ Ceratophyllum submersum
・ Ceratophyllus
・ Ceratophyllus adustus
・ Ceratophyllus affinis
・ Ceratophyllus altus
・ Ceratophyllus arcuegens
・ Ceratophyllus avicitelli
・ Ceratophyllus borealis
・ Ceratophyllus breviprojectus
・ Ceratophyllus calderwoodi
・ Ceratophyllus caliotes
・ Ceratophyllus celsus
・ Ceratophyllus chasteli


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Ceratophyllum echinatum : ウィキペディア英語版
Ceratophyllum echinatum

''Ceratophyllum echinatum'', commonly called spineless hornwort, is an aquatic perennial plant of the genus Ceratophyllum.〔(【引用サイトリンク】 Ceratophyllum echinatum )〕 It can be found in ponds and lakes. It is principally an eastern North American species and the only species of its genus endemic to North America.〔(【引用サイトリンク】 Ceratophyllum echinatum )
==Description==
''Ceratophyllum echinatum'' is an aquatic herb. The spineless hornwort usually does not have any roots with stems that are freely branching (0.3-4.0 m long). The leaves are submerged and they are usually in whorls of 5 to 12. Its flower does not have any petals but have sepals (3-15) that are sometimes mistaken for petals. The flower is tiny, could be male or female, and contains about 12 to 16 stamens.〔(【引用サイトリンク】 Specie Information )〕 It blooms from February to July. The fruits have dry seeds with a lot of spines and a rough surface.〔(【引用サイトリンク】 Ceratophyllum echinatum A.Gray )

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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