Hypericum genus --- Saint Johnswort Family
tinker's penny (Hypericum anagalloides) -- in July -- Lassen Volcanic National Park, CA yellow & orange
common St. Johnswort (Hypericum perforatum) -- in July -- NCAR and Boulder County, CO yellow & orange
common St. Johnswort (Hypericum perforatum) -- in July -- Klamath Falls to Ashland (Rt. 66), Oregon yellow & orange