Hayden's Aster
Oreostemma alpigenum var. haydenii
Synonyms: Aster alpigenus ssp. haydenii, Aster alpigenus var. haydenii

What may be hayden's aster as seen on slopes above the Mount Hood Meadows Ski Resort, Mt. Hood National Forest..........July 18, 2017.
- 
What may be Hayden's aster (or perhaps all on this page are var. alpigenum with very narrow leaves ?) as seen on alpine slopes along the Timberline Trail #600 between Cloud Cap and Lambertson Butte, Mt. Hood Wilderness........July 31, 2017.
Paul Slichter