327 Platymonas helgolandica 大扁藻 Phylum: Chlorophyta 门：綠藻門 Class: Chlorodendrophyceae 纲：四爿藻綱 Order: Chlorodendrales 目：四爿藻目 Family: Chlorodendraceae 科：四爿藻科 Morphology Cells are solitary, motile, bilaterally symmetry, roughly circular or elliptical in shape, with anterior flagella. Cell wall is relatively thin. Dorsal part of cells is smoothly convex while the ventral side is slightly concave. The posterior end tapers or becomes pointed slightly. 形態 細胞獨立生活，具運動能力，兩側對稱，大致呈圓形或橢圓形，前端具鞭毛。 細 胞壁比較薄。 背部平緩隆起，腹部略凹入。 尾部略窄或略尖。 Ecology and distribution Platymonas helgolandica is mainly distributed in coastal and estuarine waters. It can also be found in intertidal zones. 生態與分佈 大扁藻主要分佈在近岸、河口以及潮間帶。 Size 粒徑 Synonyms 同物異名
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