Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east across most of North America to the Atlantic Coast.
Habitat: Disturbed, open areas in sagebrush desert, roadsides, fields, wastelots, and other disturbed areas.
Origin: Introduced from Europe
Conservation Status: Not of concern
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PNW Herbaria: Specimen records of Holosteum umbellatum ssp. umbellatum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Holosteum umbellatum ssp. umbellatum checklist entry
OregonFlora: Holosteum umbellatum ssp. umbellatum information
E-Flora BC: Holosteum umbellatum ssp. umbellatum atlas page
CalPhotos: Holosteum umbellatum ssp. umbellatum photos