Eriogonum strictum subsp. proliferum (Torr. & A.Gray) S.Stokes (Polygonaceae) is native to British Columbia, California, Idaho, Montana, Nevada, Oregon, Washington. Flora of the World documents 5 occurrences across 1 country.
This name is a synonym
Specimens are listed under the accepted name Eriogonum strictum (Torr. & A.Gray) C.L.Hitchc.