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Species Details
Allium cernuum Roth
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesSeveral; 2-4 mm wide (Moss, 1983). Linear; shorter than flowering stem; margins entire or have small teeth; no stem leaves (E-Flora BC).
FlowersUmbel nodding; perianth segments 4-6 mm long; elliptical; pink or white; exserted stamen (Moss, 1983). 6 tepals; egg-shaped; 6 stamens (E-Flora BC).
Fruits and SeedsCapsule; 6 high crests (Moss, 1983). Egg-shaped; 3 lobes; 6 black seeds (E-Flora BC).
Scientific Name
Allium cernuum Roth
Common Name
nodding onion
General Description
A perennial herb that develops from a slender bulb and persistent, membranous rhizome; the flowering stem is 10-50 cm tall and arches at its tip to bear a cluster of pink or white flowers (Moss, 1983; E-Flora BC).
Leaves
Several; 2-4 mm wide (Moss, 1983). Linear; shorter than flowering stem; margins entire or have small teeth; no stem leaves (E-Flora BC).
Flowers
Umbel nodding; perianth segments 4-6 mm long; elliptical; pink or white; exserted stamen (Moss, 1983). 6 tepals; egg-shaped; 6 stamens (E-Flora BC).
Fruits and Seeds
Capsule; 6 high crests (Moss, 1983). Egg-shaped; 3 lobes; 6 black seeds (E-Flora BC).
Phenology
July to October (JSTOR).
Notes
2n=14* (Moss, 1983). Also included in this species is Allium recurvatum (Moss, 1983).
Range/Distribution
Alberta: Predominantly SW along mountain range with some occurrences more central (Canadensys). CAN (BC, SK, ON); USA (WA, OR, MT, ID, WY, ND, SD, UT, CO, AZ, NM, TX, NE, MN, IA, WI, IL, MO, AR, MS, AL, GA, TN, KY,…
Alberta: Predominantly SW along mountain range with some occurrences more central (Canadensys). CAN (BC, SK, ON); USA (WA, OR, MT, ID, WY, ND, SD, UT, CO, AZ, NM, TX, NE, MN, IA, WI, IL, MO, AR, MS, AL, GA, TN, KY, IN, MI, OH, NC, SC, VA, WV, PA, NY, NJ) (USDA).
Citation
Page Citation for Allium cernuum Roth
Page Citation
"Species Details - Allium cernuum Roth, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-2844/12-3422. Accessed 05 Jul. 2024.
Specimen Information
There are 130 specimens of this Species.
142356 - Allium cernuum Roth
University of Alberta Vascular Plant Herbarium
Common Namenodding onion
Place CollectedNorth America: Canada, Alberta, Mount Backus
Date Collected2018-07-31
142355 - Allium cernuum Roth
University of Alberta Vascular Plant Herbarium
Common Namenodding onion
Place CollectedNorth America: Canada, Alberta, Castle Provincial Park, Castle Falls
Date Collected2018-07-20
142353 - Allium cernuum Roth
University of Alberta Vascular Plant Herbarium
Common Namenodding onion
Place CollectedNorth America: Canada, Alberta, Castle Wildland Provincial Park, Yarrow Canyon
Date Collected2018-07-23
142354 - Allium cernuum Roth
University of Alberta Vascular Plant Herbarium
Common Namenodding onion
Place CollectedNorth America: Canada, Alberta, Castle Provincial Park, Sartoris Road
Date Collected2018-08-02