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Allium cernuum Roth

Nodding onion

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassLiliopsidaMonocots (plants with a single seed leaf); includes the lily family
SubclassLiliidaeIncludes lilies, orchids, and many others
OrderAsparagalesA diverse group that includes asparagus
FamilyAmaryllidaceaeAmaryllis family—plants that grow from bulbs. Includes onions and many others
GenusAlliumOnions, leeks, shallots, garlic, scallions, etc.
SpeciescernuumMeans "dry seed head"

About plant names...

Nodding onions have long narrow grass-like leaves about a foot in length and ¼″ (6.3 mm) in width. A rosette of leaves at the base of the plant is vase-shaped. They lack the bulbs present in most other members of the onion family (onions are members of the lily family).

Identification: The most obvious feature of this plant is the one that gives it its common name—the flowerhead tilts or nods, a result of a small crook near the top of the stem.

Online References:

Vascular Plants of the Gila Wilderness

Illinois Wildflowers

The Oregon Flora Image Project

Plants for a Future, a resource and information centre for edible and otherwise useful plants

The Lady Bird Johnson Wildflower Center

Wikimedia Commons

The Missouri Botanical Garden

EFloras

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 10 × 7″ (25 × 16 cm)

Allium cernuum (nodding onion)

6/17/2012 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 3½ × 5″ (9.2 × 13 cm)

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 7 × 10″ (16 × 25 cm)

Allium cernuum (nodding onion)

8/1/2009 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 6 × 4″ (14 × 9.9 cm)

 

Allium cernuum description by Thomas H. Kent, last updated 14 Sep 2023.

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Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 15 × 10″ (37 × 25 cm)

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 6 × 9″ (15 × 22 cm)

Allium cernuum (nodding onion)

8/1/2009 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 2 × 3′ (60 × 90 cm)

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 1½ × 1′ (47 × 31 cm)

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 6 × 9″ (15 × 22 cm)

Allium cernuum (nodding onion)

8/30/2014 · New Mex­ico · ≈ 15 × 10″ (37 × 25 cm)

Range:

About this map...