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Asystasia gangetica (L.) T. Anderson Subsp. micrantha (Nees) Ensermu (Acanthaceae), a Newly Naturalized Plant in Taiwan

台灣爵床科的新歸化植物-小花寬葉馬偕花

摘要


本文報導最近在台灣南部發現原產於非洲、印度與斯里蘭卡之新紀錄種-小花寬葉馬偕花(Asystasia gangetica (L.) Anderson subsp. micrantha (Nees) Ensermu)。對台灣而言,此發現是新紀錄屬亦是新紀錄種。馬偕花屬以其花冠為兩側對稱、完全雄蕊4枚、蒴果具4枚種子與明顯之子房柄,而與台灣所產爵床科之其他屬明顯區分。本文提供本屬及本植物的描述,手繪圖及彩色照片。

並列摘要


Asystasia gangetica (L.) T. Anderson subsp. micrantha (Nees) Ensermu, an Acanthaceae species native in Africa, India and Sri Lanka, has been recently found naturalized in the southern Taiwan. The naturalization of A. gangetica subsp. micrantha adds a new element to the flora of this island. Asystasia is easily distinguished from other genera of the Acanthaceae by corolla being zygomorphic, 4 stamens, 4-seeded and distinctly stipitate capsule. A. gangetica subsp. micrantha is characterized by ovate to oval leaves, and white flowers. This paper provides description of the genus and species, line drawing, and photographs.

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