Three new species in the genus Stigonema of Cyanophyta from Jilin Province are reported in the paper: Stigonema sinuatum Y.M.Lin et H.X.Xiao, sp. nov.

• 摘要报道了采自吉林省的蓝藻门真枝藻属三新种：波纹真枝藻，拟小真枝藻，悦目真枝藻。