27. R. digitata var. K. allied to R. nivea & R. hyptotoma. June 25, 1864. Gold Run District, Mr. Peak above Cumberland 9,000 ft. 2 sp. 16, May. Trahanteh Mrs. Whah. Cottonwood Lake. (G.c. Sata.) 9,000 ft. 30 R. arthi Inypelline s? K. rare but for the most part, margins otherwise July 17, 1869. Nakhateh Mrs. Whah. Divide above Cottonwood Canon. Bank of now bank. 10,000 ft. alt. 14 sp. Glabrous throughout, excepting a slight ciliation along the margins of the leaves. 6-12' high. Previously found only in the river bottoms of Oregon. Capitula more numerous. Then repens. 29. R. Andersonii, Gr. rar. June 14, 1869. Pilot Rock Point, Salt Lake, Utah. 5,000 ft. 3 sp. That plant more delicate or slender; stems 1' high, with (in one specimen) a leaflet above the middle similar to the radical leaves; phylls and achene somewhat smaller, & the latter less numerous crowded in the heads. 30. R. Andersonii, Gr. (Proc. Am. Acad. Art. Sci. VII. 32.) At this remarkable species was originally described from flowering specimens only, a full description is here given, founded upon a large number of matured specimens plants. Scapus, glaber, radice fibrosa, foliis tripinnatis, segmentis trifidis, laciniatiss, lacinias lanceolatae subcaulis; scapus aphyllis unifloris; floribus pollicem diametro; sepalis latissimis glabris persistentibus; petalis "saturate rosio" et ungue brevi angusto in laminam suborbicularin basiforcea minima gaudentem dilatatis marcescenti-persistentibus; capitulis maturis prae grandibus sphaeroides, carpellis pro genere maximis, inflatis, adsubturan ventralem anguste oblis, qlabrinimis, subcomprassis, Stheis, stylo minimo curvato apiculatis, animum elongato, loviter curvato, supra basim subra ventralis affixo adscendente. Glabrous throughout, with somewhat erect or fleshy habit, a span to