Allium decaisnei is a species of onion found in Israel, Palestine, Jordan, and the Sinai Peninsula in Egypt.Kew World Checklist of Selected Plant Families It is a perennial with an upright scape. Umbel is loose, with long-pediceled green flowers, most of them nodding (drooping).Presl, Carl Bořivoj. 1845. Abhandlungen der königlichen Böhmischen Gesellschaft der Wissenschaften V, 3: 544.Kollmann, Fania Weissmann. 1986. Flora of Palestine 4: 87, Allium stamineum subsp. decaisnei
Some authorities categorize this taxon as a subspecies of A. stamineum,Kollmann, Fania Weissmann 1986. Flora Palaestina 4: 87Boulos, L. (2005). Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo. with others consider the name a synonym of A. flavum.Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
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