392 NORTH AMERICAN FLORA [Volume 24 



mm. long, the body about 12 mm. long, 3-4 mm. wide and thick, more gradually acute than 

 in the related species, cordate in cross-section. 



Type locality: Good Springs, western Nevada. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 38 (var. remotus). 



17. Tium atropubescens (Coult. & Fisher) Rydb. Bull. Torrey Club 

 40:49. 1913. 



Astragalus atropubescens Coult. & Fisher. Bot. Gaz. 18: 300. 1893. 

 Astragalus Kelseyi Rydb. Mem. N. Y. Bot. Gard. 1: 241. 1900. 

 Astragalus arrectus Kelseyi M. E. Jones, Rev. Astrag. 161. 1923. 



A perennial, with a woody root and short caudex; stems several, 3-4 dm. high, sulcate, 

 strigose; leaves ascending, 7-10 cm. long; stipules deltoid, 3-4 mm. long, spreading; leaflets 

 15-21, linear or oblong, 8-15 mm. long, 1.5-3 mm. wide, glabrous above, strigose-canescent 

 beneath; peduncles 5-10 cm. long; racemes 3-5 cm. long; bracts lanceolate-subulate, 2-3 mm. 

 long; pedicels 1-2 mm. long; calyx black-hairy, the tube 4 mm. long, 2.5 mm. broad, the teeth 

 subulate, scarcely 2 mm. long; corolla ochroleucous, 13-14 mm. long; banner obovate, moder- 

 ately arched; wings nearly as long, the blade oblanceolate, falcate, with a large auricle; keel- 

 petals shorter, the blade broadly lunate, more strongly arched towards the obtuse apex; pod 

 glabrous, the stipe about 4 mm. long, the body oblong, 15-20 mm. long, 4 mm. wide and thick, 

 abruptly acute at each end, the upper suture obtuse, the lower sulcate, the cross-section 

 broadly cordate, the septum 1.5 mm. wide. 



Type locality: Deer Lodge. Montana. 

 Distribution: Western Montana. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 37. 



18. Tium Leibergi (M. E. Jones) Rydberg. 



Astragalus Leibergi M. E. Jones. Proc. Calif. Acad. II, 5: 663. 1895. 

 Astragalus arrectus Leibergi M. E. Jones. Contr. W. Bot. 10: 68. 1902. 

 Phaca arrecta Leibergi Piper, Contr. U. S. Nat. Herb. 11: 372. 1906. 



A cespitose perennial, with a woody root; stems proper very short, usually less than 1 

 dm. long, striate, sparingly strigose; leaves ascending, about 1 dm. long; stipules connate, 

 scarious, 3 mm. long; leaflets 9-17, linear, about 1 cm. long and 1 mm. wide, strigose; peduncles 

 1-2 dm. long, strigose; racemes 5 cm. long, in fruit 10 cm. long; bracts lanceolate, 3 mm. long; 

 pedicels 2-3 mm. long; calyx black-hairy, the tube about 4 mm. long, the teeth subulate, 2 

 mm. long; corolla ochroleucous, similar to that of T. arrectum; pod black-strigose, the stipe 

 scarcely equaling the calyx-tube, the body oblong, 1.5-2 cm. long, 4 mm. wide and thick, the 

 cross-section cordate, the septum about 1 mm. wide. 



Type locality: Egbert Spring. Douglas County. Washington. 



Distribution: Washington and Idaho. 



Illustrations: M. E. Jones, Rev. Astrag. pi. 37 (as .4. arrectus var., and var. Leibergi.) 



19. Tium Michauxii (Kuntze) Rydberg. 



Astragalus glaber Michx. Fl. Bor. Am. 2: 66. 1803. Not .4. glaber Lam. 1783. 

 Tragacantha Michauxii Kuntze. Rev. Gen. 941. 1891. 

 Astragalus apilosus Sheldon, Minn. Bot. Stud. 1: 22. 1894. 

 Tium apilosum Rydb.; Small, Fl. SE. U. S. 619, 1332. 1903. 



A perennial, with a woody root; stem glabrous, simple, 5-10 dm. high, flexuose, sulcate; 

 leaves 10-15 cm. long, spreading; stipules deltoid, 1 mm. long, spreading; leaflets 15-35, oblong 

 or elliptic, firm, 5-15 mm. long, obtuse to retuse at the apex, glabrous or sparingly pilose on 

 both sides; peduncles 5-10 cm. long; racemes lax, 4-10 cm. long; bracts lanceolate, 1-2 mm. 

 long; pedicels 2 mm. long; flowers drooping; calyx minutely strigose, the tube 5 mm. long, 3 

 mm. wide; corolla white, 12-15 mm. long; banner obovate, notched, moderately arched at the 

 middle; wings shorter, the blade obliquely oblanceolate, somewhat falcate, with a large reflexed 

 auricle; keel-petals nearly as long, the blade lunate, obtuse; pod nearly sessile, linear-falcate, 

 acute at each end, cross-reticulate, glabrous, 2-3 cm. long, 4-5 mm. wide and thick, coriaceous, 



