What you see in this photo is a close-up of just one cluster of smaller flowers on one ray (of 27) on a plant with an umbel of white flowers. (I am trying to sound like I know what I’m talking about!) I am not completely sure, because several wildflowers have similar traits, but I think this is a Cow Parsnip (although it really looks like the flower in this photo that someone is calling “wild carrot“—same thing?). This close-up reminds me of a classic wedding bouquet. We saw it on our hike to Grinnell Lake in Glacier National Park, Montana.