Four species of genus Batrachospermum Roth,B.mahlacense Kumano et Bowden Kerby,B.ambiguum Montagne,B.nonocense Kumano et Liao and B.kushiroense Kumano et Ohsaki,are described in this paper and they all are reported for the first time to China.

• 记述了我国串珠藻属的 4个新记录种 ；即马赫拉串珠藻 Batrachospermum mahlacense Kum ano et Bowden-Kerby、可疑串珠藻 B.；ambiguum Montagne、诺诺串珠藻 B