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{{Taxobox
| color = lightgreen
| name = ''Allium cernuum''
| image = Allium cernuum.jpg
| image_width = 240px
| regnum = [[Plantae]]
| divisio = [[Flowering plant|Magnoliophyta]]
| classis = [[Liliopsida]]
| ordo = [[Asparagales]]
| familia = [[Alliaceae]]
| genus = ''[[Allium]]''
| species = '''''A. canadense'''''
| binomial = ''Allium cernuum''
| binomial_authority = [[Albrecht Wilhelm Roth|Roth]]
}}

'''Nodding onion''' (''Allium cernuum''), also known as '''lady's leek''', is a perennial plant in the family [[Alliaceae]]. It has an unsheathed slender conic [[bulb]] which gradually tapers directly into several keeled [[grass]]-like leaves (2-4mm wide). Each mature bulb bears a single flowering stem, which terminates in a downward nodding [[umbel]] of white or rose [[flower]]s. Nodding onion blooms in July or August. The flowers mature into a spherical crested [[fruit]]s which later split open to reveal the dark shiny [[seed]]s. This plant does not have [[bulblet]]s. This plant grows in dry [[woods]], rock outcroppings, and [[prairie]]s. It is native to [[North America]] from [[New York]] to [[British Columbia]] south to [[Virginia]] and [[Kentucky]] and south in the [[mountain]]s. The bulb is edible and has a strong onion flavor.

This species is cultivated for its attractive flowers.
''Allium cernuum'' form ''major'' has larger plants and larger flowers than the normal species.


==References==
* [http://www.pfaf.org/database/plants.php?Allium+cernuum Plants For A Future: ''Allium cernuum'']

<gallery>
Image:Allium cernuum seed head.jpg|Seed head of ''A. cernuum''
Image:Allium cernuum BB.jpg|''A. cernuum'' from Britton and Brown 1913
</gallery>

{{monocot-stub}}

[[Category:Asparagales]]
[[Category:Alliaceae]]
[[Category:Onion]]
[[Category:Flora of Canada]]
[[Category:Flora of the United States]]
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