Observações de judithofsquamish

heavily feeding on emerging Salix scouleriana leaves

The teeth on these leaves are more pronounced than some Hieracium spp, the introduced European H. lachenalii is a possibility.

open, rather dry habitat

open, quite dry habitat

humid soil near wet areas

under a large rock overhang

Cornus cornuta has a closed involucre. C. avellana also grows here, it has an open involucre.

leaves alone make it difficult to reliably prove at this time of year, however I think it's this.