Part 5, 1929] FABACEAE: GALEGEAE 273 



43. Homalobus stenophyllus (T. & G.) Rydb. Mem. N. Y. Bot. 

 Gard. 1: 249. 1900. 



Astragalus leptophyllus Nutt. Jour. Acad. Phila. 7: 18. 1834. Not A. leplophyUus Desf. 1800. 



Astragalus stenophyllus T. & G. Fl. N. Am. 1: 329. 1838. 



Astragalus fili pes S. Wats. Bot. King's Expl. 75. 1871. Not H. filipes Torr. 1864. 



Tragacantha stenophylla Kuntze, Rev. Gen. 948. 1891. 



Phaca stenophylla Piper, Contr. U. S. Nat. Herb. 11: 371. 1906. 



A perennial, with a cespitose woody caudex; stems erect, 3-10 dm. high, glabrous, striate 

 and slightly angled; leaves 6-10 cm. long, erect or ascending; stipules lanceolate or deltoid, 

 distinct or the lower connate; leaflets 9-15, linear, 1-2 cm. long, 1-2 mm. wide, glabrous on 

 both sides or sparingly hairy beneath; peduncles 5-12 cm. long; racemes rather lax, 5-10 cm. 

 long; bracts lanceolate, 1-2 mm. long; calyx black-strigose, the tube 3-4 mm. long, the teeth 

 triangular, often obtuse, 1 mm. long or less; corolla yellow; banner obovate, 10-12 mm. long; 

 wings 9-10 mm. long, the blade obliquely oblanceolate, acute or acutish, hastately auriculate 

 at the base, about equaling the claw; keel-petals 8-9 mm. long, the blade broadly lunate, 

 rounded at the apex and with a rounded basal auricle; pod stipitate, the stipe strigose, about 

 1 cm. long, the body linear-oblong, acute at each end, 2-2.5 cm. long, 4—5 mm. wide; seeds 

 obliquely rcniform, 3-3.5 mm. long, 2-2.5 mm. broad. 



Type locality: Headwaters of the Missouri. 



Distribution: British Columbia to central Idaho, eastern Nevada, and California. 



Illustration: M. E. Jones, Rev. Astrag. pi. l,f. 4. 



44. Homalobus MacGregorii Rydb. Bull. Torrey Club 

 50; 270. 1923. 



A perennial, with a cespitose caudex; stems strigose, striate; leaves 5-8 cm. long; lower 

 stipules triangular, scarious, connate, the upper ones more herbaceous, distinct; leaflets 13-19, 

 linear, 10-15 mm. long, 1-2 mm. wide, strigose on both sides; peduncles 1-2 dm. long; racemes 

 lax, 5-12 cm. long; bracts subulate, 2-3 mm. long; calyx strigose, the tube 4—5 mm. long, the 

 teeth triangular, 1 mm. long or less ; corolla ochroleucous or white ; banner 1 2 mm. long, obovate ; 

 wings 11 mm. long, the blade obliquely oblanceolate, equaling the claw; keel-petals 10 mm. 

 long, rounded at the apex, the blade broadly lunate, with a rounded basal auricle; pod stipitate, 

 the stipe 12-15 mm. long, slightly pubescent, the body glabrous, linear-elliptic, acute at each 

 end, 2.5 cm. long, 5-6 mm. broad. 



Type locality: Near Frazier Borax Mine, Mount Pinos, Ventura County, California. 

 Distribution: Southern California and northern Lower California. 



45. Homalobus canovirens Rydb. Fl. Rocky Mts. 

 ed. 2. 1126. 1922. 



Astragalus Coltoni moabensis M. E. Jones, Contr. W. Bot. 8: 11. 1898. 



A perennial, with a cespitose rootstock; stem 3-5 dm. high, grayish-strigose and angled; 

 leaves 4-6 cm. long; stipules deltoid, 2-3 mm. long; leaflets 7-15, linear or linear-oblong, strigose 

 on both sides, 5-12 mm. long, obtuse; peduncles 5-15 cm. long, strigose; racemes 5 cm. long 

 or less, 5-10-flowered; bracts subulate, 1 mm. long or less; calyx black-hairy, the tube 4 mm. 

 long, the teeth 1 mm. long, subulate; corolla dark bluish-purple with yellowish claws; banner 

 obovate, nearly 1.5 cm. long; wings with a large basal auricle; keel-petals rounded at the apex; 

 pod glabrous, stipitate, the stipe 1 cm. long or less, the body oblong, 2-2.5 cm. long, 5 mm. wide ; 

 seeds obliquely reniform, 3 mm. long, fully 2 mm. wide. 



Type locality: Western slope of La Sal Mountains, Utah. 



Distribution: Southeastern Utah, northwestern New Mexico, and western Colorado. 



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



