Part 7, 1929] FABACEAE: GAEEGEAE 395 



above; peduncles 5-15 cm. long; racemes 3-5 cm. long, rather lax; brads lanceolate, 2 mm. long; 

 pedicels 2-4 mm. long, recurved; calyx black-hairy, the tube 4 mm. long, 2 mm. wide, the 

 teeth lance-subulate, 1.5-2 mm. long; corolla white, 8-10 mm. long; banner ovate, strongly 

 arched, notched, purple-striate; wings fully as long, the blade oblong, usually 2-lobed at the 

 apex; keel-petals shorter, the blade broadly lunate, nearly semiorbicular, more strongly arched 

 at the middle; pod pendulous, short-stipitate, linear, 1.5-2 mm. long, 2-2.5 mm. wide and 

 thick, strigose, slightly sulcate on the upper suture, the septum nearly meeting the upper 

 suture. 



Type locality: Pah-Ute Range, Nevada. 

 Distribution: Nevada. 



Illustrations: S. Wats. Bot. King's Expl. pi. 11; M. E. Jones, Rev. Astrag. pi. 41, f. 13S 

 and var. phyllopkorus. 



27. Tium mensarum (M. E. Jones) Rydberg, sp. nov. 



Astragalus alratus mensarum M. E. Jones, Proc. Calif. Acad. II. 5: 665. 1895. 



A perennial, with a woody root and short caudex; stems several, slender, erect or decum- 

 bent at the base, about 3 dm. high, tinged with purple, grayish-strigose-canescent ; leaves 

 spreading, 7-10 cm. long; stipules deltoid, 4 mm. long, acute; leaflets 1 1-15, elliptic or oblong 

 or those of the uppermost leaves linear, 8-10 mm. long, 2-4 mm. wide, strigose-canescent 

 on both sides; peduncles 5-S cm. long; racemes 4—5 cm. long, secund; bracts lanceolate, 1-2 

 mm. long; pedicels 2 mm. long; calyx grayish-strigose, the tube 4 mm. long, the teeth 1-1.5 

 mm. long, the lower subulate, the upper lance-deltoid; corolla about 1 cm. long; the banner 

 dark-purple, especially towards the apex, strongly arched at the middle; wings somewhat 

 shorter, the blade oblong-falcate; keel-petals still shorter, the blade broadly lunate, obtuse; 

 pod narrowly oblong, somewhat flattened, about 15 mm. long, 3 mm. wide, strigose-canescent, 

 obliquely acute at the apex, attenuate at the base, the septum extending half way to the 

 upper suture. 



Type locality: Mill Canon Divide, Darwin Mesa, Inyo County, California. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 41. 



28. Tium atratiforme Rydberg. 



Hamosa atratiformis Rydb. Bull. Torrey Club 34: 48. 1907. 



Astragalus stralurensis Tidestrom, Contr. U. S. Nat. Herb. 25: 326. 1925. Not A. slraturensis M. E. 

 Jones. 1898. 



A perennial, with a cespitose caudex; stems erect, 2-3 dm. high, slender, strigose; leaves 

 3-5 cm. long, ascending, the rachis strigose; stipules deltoid, strigose, 1-2 mm. long; leaflets 

 13-19, oblong, strigose beneath, glabrous above, 4—6 mm. long, obtuse to slightly retuse at the 

 apex; peduncles 5-7 cm. long; racemes lax, 2-3 cm. long; bracts lanceolate, 1-1.5 mm. long; 

 pedicels 1 mm. long; calyx black-strigose, the tube about 2 mm. long, the teeth subulate, 1 

 mm. long; corolla ochroleucous or white, with purple-tipped keel; banner about 7 mm. long, 

 obovate, strongly arched at the middle, retuse at the apex; wings a little shorter, the blade 

 oblanceolate; keel-petals much shorter, the blade broadly lunate, strongly curved above the 

 middle, obtuse at the apex; pod subsessile, straight, minutely strigulose, about 1.5 cm. long. 



Type locality: Southern Utah. 



Distribution: Southwestern Utah and northwestern Arizona. 



29. Tium owyheense (Nelson & Maebr.) Rydberg. 



Astragalus owyheensis Nels. & Macbr. Bot. Gaz. 55: 375. 1913. 

 Astragalus alratus owyheensis M. E. Jones, Rev. Astrag. 182. 1923. 



A perennial, with a woody root and short caudex; stems slender, ascending or decumbent 

 at the base, 1-3 dm. high, strigose; leaves 5-10 cm. long, ascending; stipules lanceolate, 3-4 

 mm. long; leaflets 9-13, narrowly linear, strigose, 5-10 mm. long, less than 1 mm. wide; 

 peduncles 5-10 cm. long; racemes lax, 5-8 cm. long, 5-10-flowered; bracts subulate, 1-2 mm. 

 long; pedicels 3-6 mm. long, recurved; calyx white-hairy, strigose, the tube 3 mm. long, the 

 teeth subulate, 1 mm. long; corolla white, 8-10 mm. long; banner broadly obovate, retuse, 

 purple-striate; wings of about the same length, the blade obliquely obovate, slightlv falcate, 



26 



