Howell's onion (Allium howellii)

Howell's onion, a reference photo — Photo: John Game · CC BY 2.0 (licence)

Allium howellii is a North American species of wild onion known by the common name Howell's onion. It is endemic to California.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Howell's onion being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Allium amplectens
Allium nevii
Allium marvinii
Allium haematochiton

Classification

Kingdom: Plantae
Phylum: Tracheophyta
Class: Liliopsida
Order: Asparagales
Family: Amaryllidaceae
Genus: Allium
Species: Allium howellii

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