This was along the Mary Bowerman Trail. Is it Lomatium utriculatum or Lomatium macrocarpum?
San Diego County, California, US
A few on rocky site, flowering
Valley County, Idaho. ~6 air miles west and 2 air miles north of Donnelley, ID. No Business Lookout, along forest service road 185, 3 miles from junction with 245. Granite slopes surrounding fire lookout, and thin sandy soils in saddle between radio tower and lookout. With Artemisia, Pinus contorta, Pinus albicaulis, Abies lasiocarpa and Picea engelmannii.