Allium crenulatum

{{Short description|Species of flowering plant}}

{{Use Canadian English|date=January 2023}}

{{Speciesbox

|name=Olympic onion

| taxon = Allium crenulatum

| image = Allium crenulatum 5231.JPG

| authority = Wiegand

|synonyms=*Allium cascadense M.Peck

• Allium vancouverense Macoun
• Allium watsonii Howell

|synonyms_ref=[http://www.tropicos.org/Name/18401653 Tropicos][http://www.theplantlist.org/tpl1.1/record/kew-295362 The Plant List]

| status = G4

| status_system = TNC

| status_ref = {{Cite web|date=2022-06-22 |url= https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.148204|access-date=22 Jun 2022 |website=NatureServe Explorer Allium crenulatum|title = NatureServe Explorer - Allium crenulatum |publisher=NatureServe}}

}}

Allium crenulatum, common name Olympic onion,[https://plants.usda.gov/core/profile?symbol=ALCR4 USDA Plant Profile] is a plant species native to Oregon, Washington, and British Columbia. It grows in the Cascades, the Coast Ranges, the Olympic Mountains, the Wenatchee Mountains, and the mountains on Vancouver Island.[http://www.pnwflowers.com/flower/allium-crenulatum Turner Photographics, wildflowers, Allium crenulatum, Olympic onion] There is one report from Alabama, but this needs verification. The species grows on talus slopes and in alpine tundra at elevations of 600–2500 m.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242101347 Flora of North America v 26 p 274, Allium crenulatum][http://bonap.net/MapGallery/County/Allium%20crenulatum.png BONAP (Biota of North America Program) floristic synthesis, Allium crenulatum]

Allium crenulatum produces ovoid bulbs up to 2 cm long, formed on rhizomes some distance from the parent bulb. Its leaves are flat, up to 35 cm long, sometimes with minute teeth along the margins. Scape is flattened and winged, up to 15 cm tall. Umbel is compact, with up to 25 flowers. Flowers bell-shaped, up to 13 mm across; tepals pink with darker pink midveins; anthers yellow or purple; pollen yellow.[http://www.botanicus.org/page/710016 Wiegand, Karl McKay. 1899. Bulletin of the Torrey Botanical Club 26(3): 135, pl. 355, f. 1.]Howell, Thomas Jefferson. 1902. Flora of Northwest America 6: 642.[https://www.biodiversitylibrary.org/page/34552401#page/135/mode/1up Peck, Morton Eaton. 1906. Proceedings of the Biological Society of Washington 49(24): 109.]Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1969. Vascular Cryptogams, Gymnosperms, and Monocotyledons. 1: 1–914. In C. L. Hitchcock, Vascular Plants of the Pacific Northwest, University of Washington Press, Seattle.Scoggan, H. J. 1978. Pteridophyta, Gymnospermae, Monocotyledoneae. 2: 93–545. In Flora of Canada. National Museums of Canada, Ottawa.[http://science.halleyhosting.com/nature/basin/3petal/lily/allium/crenulatum.htm Onions East of the Cascade Mountains, Washington and Oregon, Paul Slichter, Olympic onion, scalloped onion, Allium crenulatum]