Part 6, 1929] FABACEAE: GALEGEAE 353 



17. Annuae. Annuals or short-lived perennials. Calyx-teeth lanceolate or subulate, 

 half as long as the tube or longer. Corolla ochroleucous or purple, less than 1 cm. long. Pod 

 sessile, rather small, ovate in cross-section, the upper suture acute, straight or slightly concavely 

 arcuate, the lower rounded and strongly convex. 



61. Phaca diurna (S. Wats.) Rydberg. 



Astragalus diurnus S. Wats. Proc. Am. Acad. 21: 450. 1886. 

 Astragalus Craigi M. E. Jones, Contr. W. Bot. 9: 42. 1900. 



Perennial, branched at the base; stems several, ascending, branched, 1-2 dm. high, strigose; 

 leaves ascending, 3-5 cm. long; stipules broadly deltoid, purplish, strigose, 2 mm. long; leaflets 

 9-13, obovate, obtuse or retuse, 5-10 mm. long, 3-5 mm. wide, sparingly strigose beneath, 

 glabrous above: peduncles about 2 cm. long; calyx strigose, the tube 2 mm. long, the lobes 

 nearly 2 mm. long, subulate; coiolla white or purplish!?); banner obovate, 6 mm. long; wings 

 slightly shorter, the blade oblong, with an acute basal auricle; keel-petals shorter, the blade 

 strongly arcuate, rounded at the apex; legume sessile, strigose, 1.5-2 cm. long, fully 1 cm. wide, 

 nearly straight on the upper suture; seeds obliquely round-reniform, 2.5 mm. long, the lower 

 suture sometimes inflexed-sulcate and foiming a narrow paitial septum (.4. Craigi). 



Type locality: John Day River, Oregon. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 8, f. 34; pi. 22, f. 7V. 



62. Phaca annua Geyer; Hook. Lond. Jour. Bot. 6: 213. 1847. 



Astragalus Geveri A. Gray, Proc. Am. Acad. 6: 214. 1864. Not .4. annuus DC. 1802. 

 Tragacantha Geyeri Kuntze, Rev. Gen. 945. 1891. 



Annual; stem erect or ascending, much branched, strigose-canescent, less than 1 dm. high; 

 leaves 3-7 cm. long; stipules distinct, deltoid, strigose, 2 mm. long; leaflets 7-11, linear, 8-15 

 mm. long, 1-2 mm. wide, strigose-canescent; peduncles 1 cm. long or less; racemes 3-6-flowered; 

 calyx grayish-strigose, the tube 1.5 mm. long, the lobes subulate, 1 mm. long; corolla ochro- 

 leucous, 5-7 mm. long; banner obovate; wings somewhat shorter, the blade obliquely oblong, 

 with an acute basal auiicle; keel-petals strongly arcuate, rounded at the apex; pod strigose, 

 sessile, about 2 cm. long and 1 cm. wide, obliquely ovate-lunate, strongly gibbous on the lower 

 suture, acute on the concavely arcuate upper suture; seeds brown, obliquely round-reniform, 

 2 mm. long. 



Type locality: Plains of Upper Platte. 



Distribution: Sandy soil, Wyoming and Utah to California and Oregon. 



Illustration: M. E. Jones, Rev. Astrag. pi. 9, f. 38. 



63. Phaca triquetra (A. Gray) Rydberg. 



Astragalus triquetrus A. Gray, Proc. Am. Acad. 13: 367. 1878. 

 Astragalus Geyeri triquetrus M. E. Jones, Contr. W. Bot. 8: 7. 1898. 



Annual; stem erect, much branched, strigose-canescent, less than 2 dm. high; leaves 4-6 

 cm. long, ascending; stipules deltoid, 3 mm. long, strigose; leaflets 7-9, elliptic oi oblong, usually 

 retuse at the apex, 6-10 mm. long, 3-4 mm. wide; racemes few-flowered, shorter than the 

 leaves; calyx strigose, the tube scarcely 2 mm. long, the teeth subulate, about equalin? the tube; 

 corolla ochroleucous, 4-5 mm. long, like that of P. annua; pod strigose, about 1.5 cm. long, 6 mm. 

 broad, the upper suture acute, somewhat curved upwards, the lower convex, more or less 

 sulcate; seeds obliquely reniform, 3 mm. long. 



Type locality: Confluence of the Muddy River with the Virgin, Nevada. 

 Distribution: Known only from the type locality. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 22, f. 78. 



64. Phaca insularis (Kellogg) Rydberg. 



Astragalus insularis Kellogg. Bull. Calif. Acad. 1: 6. 1884. 



Astragalus triflorus insularis M. E. Jones, Proc. Calif. Acad. II. 5: 637. 1895. 



Annual; stem branched, ascending or spreading, rarely more than 1 dm. long, sparingly 

 strigose; leaves 4-7 cm. long; stipules deltoid, acuminate, strigose, 2-3 mm. long; leaflets 11-17, 



