WOOTON" AND STANDLEY FLOE A OF NEW MEXICO. 363 



14. Astragalus humistratus A. Gray, PI. Wright. 2: 43. 1853. 

 Tiumhumistratum Rydb. Colo. Agr. Exp. Sta. Bull. 100: 205. 1906. 



Type locality: "Pebbly bed of a stream, and on hills under pine trees, near the 

 Copper Mines," New Mexico. Type collected by Wright (no. 1003). 



Range: Mountains of Colorado and Utah to New Mexico and Arizona. 



New Mexico: Dulce; Pecos; Santa Rita; White Mountains; Black Range. Tran- 

 sition Zone. 



This species is fairly common in the southern part of the State and in Arizona. It 

 is associated with a nearly related species in New Mexico and with two close rela- 

 tives in Arizona. As here treated, A. humistratus is the form having deeply sulcate, 

 somewhat recurved pods, thinly villous to glabrate leaflets, and not very conspicu- 

 ous stipules. Astragalus sonorae is the close relative common in southern New Mexico. 

 It has herbage persistently white-silky throughout, with conspicuous white, connate 

 stipules, and a somewhat shorter pod than A. humistratus, described as not sulcate, 

 but not infrequently dorsally sulcate and recurved, though generally not so pro- 

 nouncedly so as that of A. humistratus. On account of the pod characters originally 

 given, these two species are usually widely separated in the lists of species, but 

 they are very closely related. The other nearly related species is A. hosackiae Greene. 



15. Astragalus alpinus L. Sp. PI. 760. 1753. 



Tium alpinum Rydb. Colo. Agr. Exp. Sta. Bull. 100: 205. 1906. 



Type locality: "Ilabitatin Alpibus Lapponicis, Helveticis." 



Range: British America to Vermont and northern New Mexico; also in Europe 

 and Asia. 



New Mexico: Winsors Ranch; Rio Pueblo; Chama. Damp meadows and open 

 woodlands, in the Transition and Canadian zones. 



16. Astragalus rusbyi Greene, Bull. Calif. Acad. 1: 8. 1884. 



Type locality: "On Mt. Humphreys, in the northern part of Arizona." 

 Range: Mountains of western New Mexico and Arizona. 



New Mexico: Mountains west of Grant; Magdalena Mountains; Socorro; Craters; 

 Mogollon Mountains. Transition Zone. 



17. Astragalus altus Woot. & Standi. Contr. U. S. Nat, Herb. 16: 136. 1913. 

 Type locality: Toboggan, in the Sacramento Mountains. Otero County, New 



Mexico. Type collected by Wooton, July 31, 1899. 



Range: Sacramento Mountains of New Mexico. 



Similar to Astragalus rusbyi, but differing in its Bhorter and broader leaflets and 

 crowded flowers on much shorter peduncles, and in the longer stipes and much less 

 Lnflexed sutures of the pods. 



18. Astragalus scopulorum Porter in Port. &, Coult. Syn. Fl. Colo. 24. 1874. 

 Tium scopulorum Rydb. Colo. Agr. Exp. Sta. Bull. 100: 205. 1906. 



Type locality: South Park, Colorado. 



Ranoi:: Mountains of Colorado and northern New Mexico. 



New Mexico: Glorieta; Placitas. Transition Zone. 



19. Astragalus brandegei Porter in Port, it Coult. Syn. Fl. Colo. 21. 1S74. 

 Atelophragma brandegei Rydb. Colo. .Agr. Exp. Sta. Bull. 100:205. L906. 

 Type locality: Banks of the Arkansas, near Canyon city. Colorado. 

 Range: Mountains of Colorado and northern New Mexico. 



New Mexico: Santa Fe; near Cliff. Transition Zone. 



20. Astragalus praelongus Sheld. .Minn. Bot. Stud. 9:23. L894. 



Astragalus procerus A. Gray, Proc. Amer. Acad. 13:369. 1878, nol Boise, di Baussk. 



1867. 

 Astragalus ro&rochii Sheld. Minn. Bot. Stud. 9: L' i. L8JM 

 Astragalus pattersoni procerus Jones, Proc. Calif, Acad. II. 5:636. l v I 



