Circaea alpina var. caulescens Circaea alpina var. pilosula Circaea alpina f. pilosula Circaea caucasica Circaea caulescens Circaea caulescens var. robusta Circaea dubia var. makinoi Circaea caulescens var. pilosula
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024