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oneleaf onion

Scientific Name: Allium unifolium

Family: Liliaceae

Category: Monocot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

One-Leaf Onion (Allium unifolium)

The One-Leaf Onion, scientifically known as Allium unifolium, is a captivating wild onion species native to specific regions of North America. It's admired for its ornamental qualities and delicate beauty.

Considerations for Pets and Children

  • This plant is a bulbous perennial.
  • It forms clumps of grass-like leaves.

Taxonomy and Nomenclature

  • Scientific Name: Allium unifolium Kellogg
  • Common Names: One-leaf Onion, Oneleaf Onion, Pink Meadow Onion, American Garlic
  • Family: Liliaceae

Distribution and Habitat

  • Native to the coastal mountain ranges of California and Oregon.

Morphological Characteristics

  • Forms clumps of grass-like, slightly flattened leaves that can reach up to 16 inches in height.
  • Features taller stalks bearing an umbel (a flower cluster where stalks radiate from a single point).
  • Produces pale purple or rose-pink, star-shaped flowers in late spring.
  • Plant height is about 12 inches with a flower height of 24 inches, and a spread of 12 inches.
  • It is a bulbous perennial with strap-shaped leaves.
  • Summer dormant

Quirky Facts

  • It is one of the prettiest onions around, due to the tapered shape of the filaments.

Additional Information

  • The California Academy of Sciences holds detail records of Allium unifolium.
  • Fact sheets including distribution and classification information are available on the USDA Plants Database (http://plants.usda.gov/java/profile?symbol=ALUN).