88 Thalassionema frauenfeldii 佛氏海線藻 Phylum: Heterokontophyta 门：不等鞭毛門 Class: Bacillariophyceae 纲：羽紋硅藻綱 Order: Thalassionematales 目：海線藻目 Family: Thalassionemataceae 科：海線藻科 Morphology Cells are long, narrow, rectangular in girdle view. Valves are generally long narrow, lanceolate in outline, with slightly distinct ends: one is broad and rounded while the other is slightly pointed and thin. Cells are connected into star-shaped or zigzag colonies by small mucilage cushions at the valve ends. Frustules are thick and chloroplasts are granular and numerous. 形態 細胞殼環面觀呈細長的矩形。殼面呈細長披針形，兩端不同形，一端末端鈍圓，另 一端稍顯尖細。細胞通過殼面末端膠質相連形成星形或鋸齒狀群體。細胞壁較厚， 色素體多，小顆粒狀。 Ecology and distribution Thalassionema frauenfeldii is a cosmopolitan species observed in both coastal and oceanic waters and displays a broad temperature range. T. frauenfeldii often occurs together with T. nitzschioides. 生態與分佈 佛氏海線藻是近海和大洋都有分佈的廣溫性物種。佛氏海線藻一般與菱形海線藻 同時出現。
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