45. Pentstemon glaber, Ph. rarpyananthus, Gr. (Gr. Syn. Pant. 60.) Also a Utah form; a very distinct variety, if not a good species. May 17-24, 1869. Wasatch Mts., Utah. City Creek Canon. 5,000 ft. 5 sp. 46. P. Fremontii, 7 sp. (Gr. Syn. Pant. 60.) 12" high; anthers globular except a long the Dibianum; throat somewhat broad; light blue or pink. a) July 6, 1868. Bridget Mts., Mr. Austin Pass. 6,000 ft. 5 sp. b) " 10, " Diamond Range, Stage Pass " 4" c) " 19-20, " E. Humboldt Mts., Mr. Cain's Camp Ruby 6,000 ft. 3" d) Aug. 14, " Ridge above Sawmill 7,000 ft. 4" 47. P. acuminatus, Goug. (Gr. Syn. Pant. 61.) May 20, 1868. Humboldt Valley, Mr. Sandalls at Coggs Ferry 4,700 ft. 6 sp. 49. P. centranthifolius, Bentt. (Gr. Syn. Pant. 63.) A hitherto California species. (18) Rare. Corolla occasionally white. Collected by Palmer in S. Arizona. July 11, 1869. Wasatch Mts., Utah. Poro Canon. 6,000 ft. 5 sp. 50. P. caespitosus, Nutt. (Gr. Syn. Pant. 66.) July 29, 1869. Bear River Valley, Utah. Footills near Evanston. 6,000 ft. 3 sp. 51. P. cristatus, Nutt. (Gr. Syn. Pant. 67.) July 9, 1868. Limestone ridge east of Monitor Valley, Utah. 6,000 ft. 2 sp. 52. P. Palmeri, Gr. (Natl. Bot. 39) P. tibetanum - Perhaps P. Palmeri, "An exceedingly handsome and well marked species, Only occurs in Utah, Gr. a) May 19, 1868. Trinity Mts., Mr. Cain's Led. with J. Loveckis. 5,000 ft. 2 sp. b) June 16, " E. Humboldt Mts., Mr. Footills near Unionville. " 3" c) July 29, " E. Humboldt Mts., Mr. Footills at Camp Ruby" 6,000 ft. 1 53. P. humilis, Nutt. (Gr. Syn. Pant. 69.) a) July 20, 1868. E. Humboldt Mts., Mr. Cain's Camp Ruby. 5,000 ft. 2 sp. b) " 24, " Look down Camp Ruby " 4" c) " 27, " Canon above Mt. Ruby " 1" 54. Drimysorus, Doug., with Entolias (58) P. humilis, Nutt. var. - Not glaucous; podicle hairs erect, abruptly pilate; caulina, elongated. a) July 14, 1869. Wasatch Mts., Utah. Above Cottonwood Lake 9,000 ft. 6 sp. b) Aug. 19, " " Rim Fork of Cottonwood Canon 8,000 ft. 4