Wyoming 7923 Arabis microphylla Fls, purplish, stems numerous from a multiglobed caudex, crevices and depth side of granite boulders as 7922 silique ascending fixed 7924 Schoenocaulon linifolium (Nutt.) Greene steep hillside in granitic detritus as 7922 fixed var. retrofracta (Brah.) Rydb. 7925 Arabis holboellii Hornem. ② silique reflexed, stems one or two, as 7922 7925a Arabis fendleri (Wats.) Greene ① var. spatifolia (Rydb.) Roll. 7926 Physaria ebormiflora Roll. petals white, sepals erect, greenish, steep clay and rock hillside, 3 miles south of Muddy Gap, Carbon County May 21