ON THE COVER: Phacus gigas is one of the biggest representatives of its genus. The large, almost round cells (approximately 100 μm in diameter) are flat and terminate with a sharp hyaline tail.

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封面：Phacus gigas是其属的最大代表之一。大型的几乎圆形的小室（直径约100μm）是扁平的，并以锋利的透明尾巴终止。