locally common near streams or other (relatively) wet patches
San Diego County, California, US
Large population of triangularis along hiking path and across dead logs in river.
I mean this observation for the pink ones, not the yellow cats' earsy stuff.
Toulouse deadows campground campsite 42B. Also called Sierra ragweed
This bright yellow flowering plant, Senecio jacobaea, or Tansy ragwort, is an invasive, toxic, noxious weed that is very harmful to any animals that eat it. It's definitely a plant out of place, as it's so pretty.
Senecio /sɨˈniːʃi.oʊ/ is a genus of the daisy family (Asteraceae) that includes ragworts and groundsels. The flower heads are normally rayed, completely yellow, and the heads are borne in branched clusters. Senecio is one of the largest genera of flowering plants, and despite the separation of many species into other genera it still contains c. 1250 species of varied form, including leaf, stem and tuber succulents, annuals, perennials, aquatics, climbers, shrubs and small trees. Some species produce...