[Vol. 2 



596 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



near Dulce, alt. 2150-2470 m., 20 Aug., 1911, Standley 8183 

 (U. S. Nat. Herb.) ; Chama, 8 Sept., 1899, Baker (U. S. Nat. 

 Herb, and Mo. Bot. Gard. Herb.) ; Santa Fe Canon, 3 Oct., 

 2380-2850 m., 8 July, 1911, Standley 6564 (U. S. Nat. Herb.) ; 

 Navajo Indian Reservation in the Tunitcha Mountains, 8 Aug., 

 1911, Standley 7591 (U. S. Nat. Herb.) ; mountains near Las 

 Vegas, July, 1881, Vasey (U. S. Nat. Herb.) ; Santa Fe Canon, 

 7 July, 1897, alt. 2440 m., A. A. & E. G. Heller 3819 (Gray 



Herb, and Mo. Bot. Gard. Herb.); Sante Fe Canon, 3 Oct., 

 1913, Rose, Fitch £ Parhhurst 17714 (U. S. Nat. Herb.) ; 

 Canoncinto, Santa Fe Co., coll. of 1879, Brandegee 12078 

 (Mo. Bot. Gard. Herb.) ; creek bottom, Santa Fe, 20 Oct., 1846, 

 Fendler 475 (Gray Herb, and Mo. Bot. Gard. Herb.) ; Balsam 

 Park, Sandia Mountains, alt. 2500 m., Aug.-Sept, 1914, Ellis 

 281 (Mo. Bot. Gard. Herb.) ; Pecos River Indian Reservation, 

 6 Aug., 1898, Coghill 144 (Mo. Bot. Gard. Herb.) ; Mineral 

 Creek, Sierra Co!, alt. 2130 m., 26 Sept., 1904, Metcalfe 1415 

 (U. S. Nat. Herb.) ; Santa Antonita, Whipple's Exploration 

 1853-54, Bigelow (IT. S. Nat. Herb, and Gray Herb.) ; Organ 

 Mountains, alt. 2130 m., 23 Sept., 1906, Wooton & Standley 

 (U. S. Nat. Herb.). 



Utah: Big Cottonwood Canon, Salt Lake Co., alt. 2774 m, 

 10 Aug., 1905, Garrett 1591 (U. S. Nat. Herb.); Tate Mine, 

 Marysvale, alt. 2740 m., 22 Aug., 1894, Jones 5858 (Mo. Bot. 

 Gard. Herb.) ; Bromide Pass, Henry Mountains, alt. 3050 m., 

 27 July, 1894, Jones 5695 (ld (U. S. Nat. Herb.) ; slope of 

 Aquarius Plateau, alt. 2750 m., 2 Aug., 1875, Ward 499 (U. S. 

 Nat. Herb.). 



Arizona: Navajo Indian Reservation, about the north end 

 of the Carrizo Mountains, 29 July, 1911, Standley 7376 (U. S. 



Nat. Herb.). 



Among the specimens here cited, a few, particularly Parry's 

 26, Overholts', Mackenzie's 208, and Engelmann's plant from 

 Upper Clear Creek Valley, might be almost equally w T ell re- 

 ferred to the preceding species, 8. MacDougalii, to which S. 

 ambrosioides is very closely related ; but in general the latter 

 may be distinguished by the slightly larger and more numer- 



