Distribution: Occurring west of the Cascades crest in southwestern Washington; narrowly distributed from southwestern Washington to northwestern Oregon.
Habitat: Moist, lowland meadows and stream banks.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Endangered in Washington (WANHP)
Pollination: Bumblebees, bees, flies, wasps, hummingbirds
[none provided]
PNW Herbaria: Specimen records of Penstemon hesperius in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Penstemon hesperius checklist entry
OregonFlora: Penstemon hesperius information
E-Flora BC: Penstemon hesperius atlas page
CalPhotos: Penstemon hesperius photos