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A New Record of Sargassum Alternato-pinnatum Yamada (Fucales, Phaeophyceae) from Taiwan

臺灣產馬尾藻之新記錄種Sargassum Alternato-pinnatum Yamada

摘要


本文對臺灣之新記錄馬尾藻argassum alternato-pinnatum Yamada進行闡述。標本採集於蘭嶼海岸淺潮池中。該種具有以下之特徵:一、小型盤狀固著器;二、主軸呈圓柱形;三、刺棘生於藻枝表面;四、藻葉一至三次分叉;五、氣囊為球形且尖端鈍圓;六、生殖托與藻葉或似氣囊結構同柄混生;七、雌雄生殖巢散生於同一生殖托。本文提供繪圖及相片作為鑑定該種之依據。

並列摘要


This report describes Sargassum alternato-pinnatum Yamada as a newly recorded species in Taiwan. The specimens for this study were collected from a shallow tidepool in Lan-yu, Taiwan. This species is characterized by the following features: (1) small discoid holdfast, (2) terete primary branches, (3) sharp spines arising from surface of branches, (4) leaves that furcate 1-3 times, (5) spherical vesicles around the apex, (6) pseudozygocarpic receptacles with leaves or vesicle-like tissues, and (7) male and female conceptacles scattered within the receptacles. In this report, we also present a line drawing and photographs for the identification of S. alternato-pinnatum.

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