Part 5, 1929] FABACEAE: GALEGEAE 285 



4. Cnemidophacos hoodianus (Howell) Rydberg. 



Astragalus hoodianus Howell, Erythea 1: 111. 1893. 



Astragalus conjunctus Hoodianus M. E. Jones, Contr. W. Bot. 8: 9. 1898. 



Phaca hoodiana Piper. Contr. U. S. Nat. Herb. 11: 373. 1906. 



A perennial, with a woody cespitose caudcx; stems 1-2 dm. high, sulcate and angled, more 

 or less canescent-pubescent ; leaves erect, 10-12 cm. long, the rachis villous with ascending 

 hairs; stipules deltoid, connate, 5 mm. long; leaflets 21-31, linear or oblong, S— 18 mm. long, 

 canescent on both sides, obtuse or acute; peduncles erect, 1.5-2.5 dm. long; racemes rather 

 dense, 5-S cm. long; bracts subulate, 3-5 mm. long; pedicels 1-2 mm. long; calyx white-villous, 

 the tube 5 mm. long, 3 mm. broad, the teeth subulate, 5 mm. long; corolla white, about 2 cm. 

 long; banner narrowly obovate, moderately arcuate; wings shorter, the blade obliquely 

 oblong, falcate, with a large basal auricle; keel-petals much shorter, the blade broadly lunate, 

 rounded at the apex; pod erect, rather long-hairy, about 18 mm. long, 6-7 mm. thick, oval in 

 cross-section, the upper suture prominent. 



Type locality: Hood River, Oregon. 



Distribution: Columbia Valley. Oregon and Washington. 



Illustration: M. E. Jones, Rev. Astrag. pi. 36 (as A. revenlas var.). 



5. Cnemidophacos adanus (A. Nelson) Rydberg. 



Astragalus adanus A. Nelson, Bot. Gaz. 53: 222. 1912. 

 Ctenophyllum adanum Rydb. Fl. Rocky Mts. 502, 1063. 1917. 



A perennial, with a woody root and cespitose caudex; stems numerous, glabrate or 

 sparingly strigose, striate, 2-4 dm. high; leaves numerous, 1-2 dm. long, the rachis sparingly 

 pubescent; stipules scarious, deltoid, acuminate, 4-5 mm. long; leaflets 13-25, oblong to 

 obovate, 7-14 mm. long, glabrous above, sparingly strigose beneath; peduncles strict, 7-12 cm. 

 long; racemes 3-6 cm. long, 5-15-flowered; bracts lance-subulate, 2-5 mm. long; pedicels 2 

 mm. long; calyx sparingly black-hairy, the tube 4—5 mm. long, the teeth subulate, 1 .5 mm. long; 

 corolla ochroleucous, resembling that of C. reventus but smaller ; pod obliquely ovoid , rounded at 

 the base, short -acuminate at the apex, cross-reticulate, about 1 cm. long, 6 mm. thick and 5 mm. 

 wide . 



Type locality: Boise Hills, Idaho. 



Distribution: Idaho. 



Illustration: M. E. Jones, Rev. Astrag. pi. 37, f. 120. 



6. Cnemidophacos argillosus (M. E. Jones) Rydb. Bull. Torrey Club 

 40:52. 1913. 



Astragalus argillosus M. E. Jones, Zoe 2: 241. 1891. 



A perennial, with a cespitose caudex; stems many, decumbent at the base, silky -canescent; 

 leaves 7-10 cm. long, ascending, the rachis silky; stipules lanceolate, acuminate, 3 mm. long, 

 or the lower deltoid and connate; leaflets 9-13, linear, acute, 2.5-3 cm. long, 2-5 mm. wide, 

 silvery on both sides; peduncles about 1 dm. long, erect; racemes 3-5 cm. long; bracts subulate, 

 5 mm. long; pedicels very short; calyx pilose with long loose hairs, the tube 3 mm. long, the 

 teeth narrowly subulate, fully as long; corolla purplish or white, veined with purple, 9-10 mm. 

 long; banner narrowly obovate, rather strongly arched; wings shorter, the blade obliquely 

 oblanceolate, with a reflexed auricle; keel-petals shorter, the blade broadly lunate; pod ovate, 

 long-strigose, 7 mm. long, oblong in cross-section. 



Type locality: Green River, Utah. 

 Distribution: Type locality and vicinity. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 62, f. 202. 



7. Cnemidophacos flavus (Nutt.)Rydb. Bull. Torrey Club 

 32:664. 1906. 



Astragalus flavus Nutt.; T. & G. Fl. N. Am. 1: 335. 1838. 

 Tragacantha flaviflora Kuntze, Rev. Gen. 941. 1891. 

 Astragalus flaviflorus Sheldon, Minn. Bot. Stud. 1: 158. 1894. 

 Astragalus confertiflorus flaviflorus M. E. Jones, Rev. Astrag. 241. 1923. 



A perennial, with a woody root and short cespitose caudex; stems many, 1-2 dm. high, 

 decumbent at the base; leaves ascending, 5-10 cm. long, the rachis canescent; stipules deltoid, 



