Pellaea glabella var. glabella Pellaea glabella Pellaea atropurpurea var. bushii Pellaea glabella subsp. glabella Pellaea atropurpurea f. glabella Pellaea atropurpurea var. glabella Cassebeera atropurpurea var. glabella
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024