Distribution: Occurring in the Columbia River Gorge in Washington; south-central Washington to adjacent Oregon.
Habitat: Rocky banks and crevices.
Flowers: June-July
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
[none provided]
PNW Herbaria: Specimen records of Calamagrostis howellii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Calamagrostis howellii checklist entry
OregonFlora: Calamagrostis howellii information
E-Flora BC: Calamagrostis howellii atlas page
CalPhotos: Calamagrostis howellii photos