44. - P. aricularis, L., var. Whitthorne. Prostrate or ascending, leaves oblong, 5b.- time, flowers distinct, sepals 5-6, often yellowish, acheneum more or less minutely tuberculate. a) July 6, 1867. Ridge at Austin b) " 9, " Diamond Valley - sand + the man! 4" 45. - P. aricularis, L., var. cretacea. - P. aranoinimum of Gray's Herb, though the acheneum is rarely purplish smooth, certainly the same as the last, sepals more usually 6. Stem tuberous, a side of the root without its apex, as in the last. 1-2° high - somewhat yellowish. Ribland, Mich't Wisconsin b) Sept. 9, 1867. Unionville - c) Aug. 20, " Ridge kind of meadow a) July 16, " Deer Bluffdale - (Witth.) b) " 26, " Big River c) Aug. 1, 1867. Ridge Valley 46. - P. aricularis, var. sp. or var. of aricularis. - acheneum oblong-accumbent, perfectly globose, sepals 5. Leaves broadly ovate or oblong (2-3" long) a) Aug. 6, 1869. White Hills - Pickan Brooks 10,000 ft. b) " 19, " Wahahoma Mtn. - Pine Canon 9,000 ft. 47. - P. tenuis, Michx. - Cautions to the Conclusions Work to the Saskatchew, West Territory + Calif. + New Mexico. Fruit reflexed. a) June 3, 1867. W. Humb't Mtns. - Spring Valley Pass b) " 22, " Singletown Stage - Spadings Pass c) July 6, " Ridge at Austin d) " 20, " E. Humb't Mtns. - Ridge above Camp e) Aug. 19, " " Fremont's Pass f) " 26, " " Canon above Oaked Rock 7,000 g) Sept. 4, " Franklin Valley - foothills h) " 21, " Foothills near Canyon Creek Camp i) June 24, 1869. Wahatoka. - Canon above Polley's Park. j) July 10° " " Pinto Creek, ridge k) Aug. 14? " White Hills - Mar Rim, near Founta [illegible]