Allium douglasii Hook. var. constrictum Ownbey & Mingrone
[= Allium constrictum]
Remarks: Isotype

Washington: Grant County: [locality and coordinates withheld; status in Washington: G2G3/S2S3 (Sensitive; WANHP)],
Bench, rocky sandy soil. Abundant but restricted. Phenology: Flowers & Fruits. Isotype: Allium douglasii Hook. var. constrictum Ownbey & Mingrone. Published 1969. University of Washington Publications in Biology 17(1): 747. 1969. [Title: Vascular Plants of the Pacific Northwest 1: 747. 1969.]
Isotype: Allium constrictum (Ownbey & Mingrone) P. Peterson, Annable & Rieseberg. Published 1988. Systematic Botany 13: 211. 1988.

Ownbey 3421, May 19, 1966
With Mingrone
WTU, Accession: 273216, Barcode: WTU-V-000102