14 Rhodora [JANUARY 
no. 64,690. MowTANa: Upper Marias Pass, alt. 2440 m., August 4, 
1883, W. M. Canby, no. 44; Old Hollowtop, near Pony, alt. 2745 m., 
July 7, 1897, Rydberg & Bessey, no. 4041. Wyomine: Teton Mts., 
August 21, 1894, Aven Nelson, no. 1009. Coronapo: Gray's Peak, 
alt. 3965 m., August 15, 1885, Letterman; high mountains, Gray's 
Peak and vicinity, alt. 3350-4270 m., 1885, Patterson; Twin Lakes, 
1875, Brandegee; South Park, Wolf & Rothrock, nos. 343, 344; Mt. 
Ouray, alt. 3660 m., August 20, 1901, C. F. Baker, no. S41. Uvan: 
Uinta Mts., alt. 3350 m., August, 1869, Watson, no. 173. | ARIZONA: 
summit of Mt. Agassiz, August, 1884, Lemmon, no. 3289. OREGON: 
cliffs of Wallowa Mts., alt. 2745 m., July 31, 1899, Cusick, no. 2301a. 
WasHINGTON: Cascade Mts. near Mt. Baker, July 16, 1898, J. B. 
Flett, no. 860; Engel Creek near Mt. Stewart, 1883, Brandegee, no. 
672. British CoLuMBIA: mountain summits, alt. 2290 m., Kicking 
Horse Lake, July, 1885, J. Macoun; summits of Selkirk Mts., alt. 
1675-2440 m., August 2-4, 1890, J. Macoun, nos. 13, 16; summit of 
Rocky Mts., alt. 2135 m., August 18, 1890, J. Macoun, no. 15; small 
peak above timber line, alt. 2285 m., Selkirk Mts., July 26, 1905, 
C. H. Shaw, no. 1037; summit of Mt. Arrowsmith, Vancouver I., 
July 16, 1887, J. Macoun. 
A. obtusiloba (Rydberg), n. comb. `A. obtusa Torr. Ann. Lyc. 
N. Y. ii. 170 (1826) not All. Fl. Pedem. ii. 114 (1785). A. arctica y 
Torr. & Gray, Fl. i. 181 (1838). A. biflora, var. obtusa (Torr.) Wat- 
son, Bibl. Ind. 94 (1878). Alsinopsis obtusiloba Rydberg, Bull. 
Torr. Bot. Cl. xxxiii. 140 (1906), as to first citation, Ar. obtusa Torr., 
but only in small part as to other citations (see discussion below).— 
Alberta to New Mexico. The following belong here. ALBERTA: 
Sheep Mt., Waterton Lake, July 28-31, 1895, J. Macoun, no. 10,094. 
MowTANA: Bridger Mts., August 21, 1902, W. W. Jones; Spanish 
Peaks, 1901, J. Vogel; Old Hollowtop, near Pony, alt. 2440 m., 
July 7, 1897, Rydberg & Bessey, no. 4039. Wyomrine: stony sub- 
alpine parks, Brooklyn Lake, Albany Co., August, 1909, Aven Nelson, 
no. 9235; open hillsides, Telephone Mines, Albany Co., August 3, 
1900, Aven Nelson, no. 7951; Little Bald Mt., Bighorn Mts., July 13, 
1900, J. G. Jack. Cotorapo: high mountains, Gray's Peak and 
vicinity, alt. 3350-4270 m., July and August, 1885, H. N. Patterson, 
no. 11; alpine, Pikes Peak, August 27, 1895, Canby; alpine ridges 
east of Middle Park, 1861, Parry, no. 141; barren rocky places above 
the limit of trees on James Peak, August 18, 1870, E. L. Greene; 
Sierra Blanca, 1877, Hooker & Gray; South Park, 1873, Wolf & 
Rothrock, no. 364; among rocks at 3660 m., mountain northwest of 
Como, July 31, 1895, Crandall & Cowen, no. 82; Mt. Garfield, alt. 
3800 m., July 25, 1901, F. E. & E. S. Clements, no. 496; near Pagosa 
Peak, alt. 3500 m., August, 1899, C. F. Baker, no. 310 (distributed as 
A. verna). UTAH: moist soil, alt. 3810 m., La Sal Mts., Grand Co., 
July 15, 1912, E. P. Walker, no. 279. New Mexico, northern New 
Mexico, 1867, Parry, no. 17. 
