348 NORTH AMERICAN FLORA [Volume 24 



44. Phaca nivea Rydberg, sp. nov. 



Perennial, somewhat woody at the base, but apparently blooming the first season; stems 

 3 dm. high or more, branched, white-silky with appressed short pubescence; leaves 5-10 cm. 

 long, ascending; stipules broadly deltoid, 3 mm. long; leaflets 11-19, oblong or elliptic, 6-10 

 mm. long, silvery-white, obtuse; peduncles 5-8 cm. long; racemes at first short, more elongate 

 in age; bracts subulate, 1-2 mm. long; calyx-tube silvery-canescent, 3 mm. long, the lobes 

 lance-subulate, 1 mm. long; corolla purple, 12-14 mm. long; banner obovate, gradually tapering 

 below; wings somewhat shorter, the blade lunate, equaling the claw, with a large spreading 

 auricle; keel-petals similar, broader, and rounded at the apex; pod sessile, canescent-strigose, 

 when full-grown probably 2 cm. long or longer. 



Type collected 15 miles north of San Felipe Bav, Lower California, February, 1904, MacDougal 

 (herb. N. Y. Bot. Card.). 



Distribution: Lower California and Sonora. 



45. Phaca macrodon H. & A. Bot. Beech. Voy. 333. 1838. 



Astragalus macrodon A. Gray, Proc. Am. Acad. 6: 216. 1864. 



Tragacantha macrodon Kuntze. Rev. Gen. 943. 1891. 



Astragalus holoscriceus M. E. Jones, Proc. Calif. Acad. II. S: 638. 1895. 



Perennial, with a caudex; stems flexuose, 3-5 dm, high, villous throughout; leaves ascend- 

 ing, 1-1.5 dm. long, the rachis villous; leaflets 11-21, linear to elliptic, acute, 1-2 cm. long, 

 villous on both sides; peduncles 5-10 cm. long, villous; bracts lanceolate, 2 mm. long; calyx 5-6 

 mm. long, villous, the lobes lance-subulate, equaling the tube; corolla yellowish, S-9 mm. long; 

 banner obovate, rather strongly reflexed; wings nearly as long, the blade oblong, with a large 

 basal auricle; keel-petals lunate, rounded at the apex; pod sessile, obliquely ovoid, 2-3 cm. long, 

 villous-canescent. 



Type locality: California (somewhere between Monterey and San Francisco]. 

 Distribution: Monterey, San Luis Obispo, and Fresno counties, California. 

 Illustrations: M. E. Jones, Rev. Astrag. pi. 14; pi. 15, f. 61. 



46. Phaca miguelensis (Greene) Rydberg. 



Astragalus miguelensis Greene, Pittonia 1: 33. 1887. 



Perennial, somewhat woody at the base; stems branched, 3-6 dm. high, densely white- 

 woolly; leaves 5-10 cm. long, ascending or spreading; stipules broadly deltoid, 3-4 mm. long; 

 leaflets 17-25, obovate to elliptic, obtuse to retuse, 8-18 mm. long, 3-7 cm. wide, whitish- or 

 grayish- villous on both sides; peduncles 5-9 cm. long; bracts lance-subulate, 2 mm. long; 

 calyx- tube white-villous, 4-5 mm. long, the lobes subulate, 2-3 mm. long; corolla ochroleucous, 

 13-14 mm. long; banner obovate, gradually tapering below; wings somewhat shorter, the blade 

 oblong-lunate, fully as long as the claw, with a large basal auricle; keel-petals similar, shorter 

 and broader; pod sessile, finely villous-canescent, ellipsoid, about 2 cm. long and 12 mm. wide. 



Type locality: Island of San Miguel, California. 

 Distribution: Islands of San Miguel and San Clemente. 

 Illustrations: M. E. Jones, Rev. Astrag. pi. 13, f. 58; pi. 14. 



47. Phaca vestita Benth. Bot. Voy. Sulph. 13. 1844. 



Astragalus vestitus S. Wats. Bibl. Ind. 202. 1S78. Not A. vestitus Boiss. 1842. 

 Astragalus anemophilus Greene, Bull. Calif. Acad. 1: 186. 1886. 

 Tragacantha vestita Kuntze. Rev. Gen. 949. 1891. 

 Astragalus Crotalariae anemophilus M. E. Jones, Contr. W. Bot. 10: 59. 1909. 



Perennial; stems decumbent, 3-5 dm. long, white-villous with short hairs, branched; 

 leaves 5-10 cm. long, spreading; stipules broadly deltoid, 3-5 mm. long; leaflets 19-25 (25-39 

 according to Bentham), obovate to oblong, 6-15 mm. long, densely white-villous, at least when 

 young; peduncles 7-10 cm. long; racemes short and dense; bracts subulate, 2-3 mm. long; calyx- 

 tube about 5 mm. long, villous, the lobes deltoid, 1 mm. long; corolla ochroleucous or greenish- 

 yellow, 10-12 mm. long; banner obovate, gradually tapering below; wings somewhat shorter, 



