Allium passeyi is a plant species endemic to Box Elder County in northwestern Utah. It grows in shallow, stony locations at elevations of 1400–1600 m.Flora of North America v 26 p 242, Allium passeyiBONAP (Biota of North America Project), floristic synthesis, Allium passeyiUtah Rare Plant Guide Species Descriptions, Allium passeyi
Allium passeyi produces 2-3 round to egg-shaped bulbs, each up to 2 cm in diameter. Flowers are bell-shaped, up to 9 mm in diameter; tepals pink; pollen yellow.Holmgren, Noel Herman & Holmgren, Arthur Hermann. 1974. Brittonia 26(3): 309–311, f. 1, 4.photo of herbarium specimen at Missouri Botanical Garden, isotype of Allium passeyiCronquist, A.J., A. H. Holmgren, N. H. Holmgren & Reveal. 1977. Vascular Plants of the Intermountain West, U.S.A. 6: 1–584. In A.J. Cronquist, A. H. Holmgren, N. H. Holmgren, J. L. Reveal & P. K. Holmgren (eds.) Intermountain Flora. Hafner Pub. Co., New York.
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