Publication: Naturalientausch 8: 83. 1823.
Origin: Introduced from the western Mediterranean
selected vouchers: WTU
Notes: The Washington report in FNA is from Spokane County, though no specimens or basis for the report have been found. Several recent (2008, 2016) collections show it to be well established around the Potholes Reservoir in Grant County.
Well established in California, and reported for WA, ID, and NV in FNA.
FNA25: "Crypsis vaginiflora is common to abundant in clay or sandy clay soil in California, where it was first introduced in the late 1800s. It has since been found at a few locations in Washington, Idaho, and Nevada, and will probably spread to additional sites with suitable habitat in the future. It is native to Egypt and southwestern Asia."