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Alternanthera echinocephala : ウィキペディア英語版 | Alternanthera echinocephala
''Alternanthera echinocephala'', known as spiny-headed chaff flower,〔 is a shrubby plant in the amaranth family (Amaranthaceae) native to the Galápagos Islands, mainland Ecuador, and Peru. Its relatively large spiny "heads" of flowers distinguish it from other species of ''Alternanthera'' found in the Galápagos. ==Description==
''Alternanthera echinocephala'' is a much-branched shrub up to tall. Its leaves are arranged oppositely and are narrow and pointed (lanceolate) with untoothed margins, long. The flowers are grouped into somewhat rounded spikes ("heads") about across. Each flower has one large and two small bracts below it, which form the most conspicuous part of the flower head. The bracts are greenish-white, sometimes with pinkish tones. The small sepals are similar in colour, only long. The flowers have no petals and five stamens.〔 Thirteen species of ''Alternanthera'' are found in the Galápagos Islands, of which six are endemics; ''A. echinocephala'' is said to be easy to distinguish based on its relatively large flower heads with their spiny appearance.〔
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「Alternanthera echinocephala」の詳細全文を読む
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