Scirpus asper Scirpus glaucus Scirpus leptopus Scirpus subasper Scirpus asper var. polystachyus Scirpus subasper var. diffusus Scirpus subasper var. polystachyus Scirpus asper var. diffusus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024