Distribution: Occurring west of the Cascades crest in lowland western Washington; southwestern British Columbia to western Oregon; native to central and eastern North America.
Habitat: Ditches, marshes, wet meadows, wet thickets, receding shorelines, and freshwater intertidal shores.
Flowers: June-August
Origin: Introduced
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Wind
[none provided]
PNW Herbaria: Specimen records of Carex tribuloides var. tribuloides in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Carex tribuloides var. tribuloides checklist entry
OregonFlora: Carex tribuloides var. tribuloides information
E-Flora BC: Carex tribuloides var. tribuloides atlas page
CalPhotos: Carex tribuloides var. tribuloides photos