438 Phacelia linearis (Pursh) Nels. as above May 18, 1934 Wyomingia Tweedyana (C. & R.) a. nels. 439 Erigeron Tweedyana C.& R. Steep hillsides at the mouth of Big Goose Canyon May 21, 1934 440 Pentstemon eriatherus Pursh as above 441 as above 442 Antennaria pulcherrima (Hook) Greene as above 443 Mesquerella emipes a. nels. as above 444 Erigeron asperum sc. as above 445 Castilleja linariaefolia Beuth. as above 446 Pentstemon albidus Nutt. Plains - Lower Tongue River - Sheridan Co. 8-3681 May 5, 1934 Fl. cream to white