Allium coryi

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Yellowflower onion
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Allioideae
Genus: Allium
Species: A. coryi
Binomial name
Allium coryi
M.E. Jones

Allium crenulatum Wiegand

Allium coryi, common name yellowflower onion, is a plant species endemic to trans-Pecos Texas, but sometimes cultivated as an ornamental elsewhere. It is reported in the wild from only five counties: Brewster, Presidio, Jeff Davis, Pecos and Terrell. Some of the populations lie inside Big Bend National Park.[2][3]

Allium coryi grows on rocky slopes and plains at elevations of 800-1400 m. It produces egg-shaped bulbs up to 2 cm long. Flowers are bright yellow, up to 10 mm across; anthers and pollen are yellow. [2][4][5][6]


  1. ^ Bailey, L.H. & E.Z. Bailey. 1976. Hortus Third i–xiv, 1–1290. MacMillan, New York.
  2. ^ a b Flora of North America v 26, p 239, Allium coryi
  3. ^ BONAP (Biota of North America Program), floristic synthesis, Allium coryi
  4. ^ photo of herbarium specimen at Missouri Botanical Garden, isotype of Allium coryi
  5. ^ Jones, Marcus Eugene. 1930. Contributions to Western Botany 17: 21.
  6. ^ Correll, D. S. & M. C. Johnston. 1970. Manual of the Vascular Plants of Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson.