Allium cepa L. | Plants of the World Online | Kew Science
Onion - Wikipedia
botany, spices, onion (Allium cepa), drawing from Pflanzen-Taschenbuechlein 4, (Plant's Pocket Booklet 4), German spice plants, edited by Dr. Bernhard Hoermann, published by Verlag der Pflanzenwerke, Munich, Germany, 1940, literature, Germany, 20th
Allium cepa L. | Plants of the World Online | Kew Science