[Onions: The Genus Allium West of the Cascade Mountains of Oregon and Washington]

A close-up of the inflorescence of slim-leaf onion as seen at Kingston Prairie Nature Preserve to the southeast of Salem, OR.........June 2006.

A close-up of the inflorescence of slim-leaf onion as seen at Kingston Prairie Nature Preserve to the southeast of Salem, OR........June 2006.

Slim-leaf onion blooming at the trailhead for the Wolf Creek Trail (BLM) east of Roseburg, OR.........June 12, 2017.

Slim-leaf onion in bud atop Upper Table Rock to the northwest of Medford, Oregon..........April 28, 2012.