Crouch, Neil R., and Mario Martinez-Azorin. 2015. “<em>Drimia edwardsii</Em> (Asparagaceae, Scilloideae), a New Urgineoid Species from the Mkhomazi River Valley of Eastern South Africa”. Phytotaxa 195 (2):135–144. https://doi.org/10.11646/phytotaxa.195.2.2.