Olympic Onion (Allium crenulatum Wiegand)
Also known as scalloped onion.
↑Range - Expand
| Legend | Color |
| Native | |
| Native or Not Present |
This map is based on our research. We have checked its accuracy to Level 3 ecoregions. Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.
There are some herbaria records reported on GBIF and attributed to this species east of our reported range, in Eastern Washington and Oregon, but these have been rejected or marked as dubious by BONAP. We mark these regions as grayed out. We also found one record with reports from 1901 and 1916 on southwestern Vancouver Island but could not verify these, which explain the grayed out Coastal Western Hemlock-Sitka Spruce Forests region.
↑Habitat
Olympic onion grows on exposed sites with rocky, gravely, and/or clayey soils, including talus slopes (especially of rapidly-eroding shale), serpentine barrens, and rocky summits and ridgetops. Found primarily in mountains, less commonly in valleys, usually between 600-2,500m (1,969-8,202ft) in elevation. At the high end of its elevation range it occurs in alpine tundra communities.
It can occur on totally barren sites with no competing vegetation, or in alpine meadows with low, sparse grasses, but cannot tolerate competition from taller and/or lusher vegetation.
↑Notes
Although the common name "scalloped onion" is descriptive and unambiguous as referred to a plant, it is difficult to use as an online search term because it more commonly used to refer to a food.
↑Links & External Resources
• Allium crenulatum (Olympic onion) | USDA PLANTS Database (About This Site)
• Allium crenulatum | Biota of North America Project (BONAP) (About This Site)
• Allium crenulatum | NatureServe Explorer (About This Site)
• Allium crenulatum | Flora of North America (About This Site)
• Allium crenulatum Wiegand | Plants of the World Online (POWO) (About This Site)
