346 NORTH AMERICAN FLORA [Volume 24 



11. Densifoliae. Tall perennials, with oblong or elliptic leaflets. Flowers very numerous 

 in long racemes, mostly reflexed. Calyx-teeth lanceolate, at least half as long as the tube. 

 Corolla ochroleucous, the wings nearly as long as the banner, the latter moderately arched. 

 Pod sessile, large, strongly inflated, round in cross-section. 



38. Phaca unde Rydberg, sp. nov. 



Peiennial, with underground woody stems; blanches decumbent or ascending, about 2 

 dm. high; leaves numerous, more or less arcuate, 3-6 cm. long, the rachis villous; stipules scari- 

 ous, 5-6 mm. long, lance-deltoid; leaflets 13-31, crowded, obovate, usually retuse at the apex, 

 5-12 mm. long, white-villous with curved short hairs; peduncles 3-6 dm. long; racemes 3-5 cm. 

 long; bracts subulate, 2-3 mm. long, about equaling the pedicels; flowers drooping; calyx white- 

 villous, the tube eampanulate, 3-3.5 mm. long, the teeth deltoid, 1 mm. long; corolla ochro- 

 leucous, 10-12 mm. long; banner obovate, arched above the middle; wings nearly as long, the 

 blade slightly falcate, oblong, with a large auricle; keel-petals as long, similar but broader, 

 rounded at the apex; pod obliquely ovoid, about 3 cm. long and 1.5 cm. wide, more ventricose 

 on the lower suture, sparingly villous, at least when young. 



Type collected at " Walla Walla, Washington " [but more likely southern California], C. L. 

 Shear 5625 (U. S. Nat. Herb. No. S35452). 



Distribution: Southern California and [?| Washington. 



39. Phaca densifolia Smith, in Rees' Cycl. 27: Phaca no. 9. 1814. 



Phaca Nuttallii T. & G. Fl. N. Am. 1: 343. 1838. 



Phaca mflata Nutt.; T. & G. Fl. N. Am. 1: 343, as a synonym. 1838. 



Astragalus densifolius Torr. Pacif. R. R. Rep. 7: 10. 1857. Not A. densifolius Lam. 1783. 



Astragalus Menziesii A. Gray, Proc. Am. Acad. 6: 217. 1S64. 



Tragacanlha Nuttallii Kuntze, Rev. Gen. 941. 1891. 



Astragalus Crotalariae Menziesii M. E. Jones, Contr. W. Rot. 10: 59. 1902. 



Astragalus vestitus Menziesii M. E. Jones, Rev. Astrag. 110. 1923. 



Perennial; stem erect or decumbent at the base, 5-10 dm. high, sulcate, sparingly villous or 

 glabrate; leaves ascending, 6-15 cm. long; stipules membranous, 5-7 mm. long, deltoid; leaflets 

 19-41, obovate, 1-2 cm. long, 4-8 mm. wide, rather densely villous beneath, glabrate above, 

 retuse at the apex, acute at the base; peduncles 10-15 cm. long, sparingly villous; racemes dense, 

 2-5 cm. long; bracts subulate, 2-3 mm. long; flowers reflexed in age; calyx-tube 4-5 mm. long, 

 somewhat gibbous, villous, the lobes subulate, 1-1.5 mm. long; corolla ochroleucous (originally 

 desciibed as reddish, but evidently erroneously so), about 1 cm. long; banner obovate; wings 

 almost as long, the blade oblong-lunate, rounded at the apex, with a reflexed basal auricle, 

 shorter than the claw; keel-petals similar, slightly broader, tipped with purple; pod sparingly 

 strigose, in age glabrate, obliquely ovoid, about 3 cm. long and 2 cm. wide. 



Type locality: California [probably Monterey]. 



Distribution: California, from San Francisco to Santa Barbara along the coast. 



Illustrations: Hook. Ic. pi. 282; M. E. Jones, Rev. Astrag. pi. 12. 



40. Phaca pomonensis (M. E. Jones) Rydberg. 



Phaca densifolia Torr. Pacif. R. R. Rep. 4: 80. 1856. Not P. densifolia Smith, 1814. 

 Astragalus Crotalariae A. Gray, Proc. Am. Acad. 6: 216, in part. 1864. 

 Astragalus pomonensis M. E. Jones, Contr. W. Bot. 10: 59. 1902. 



Perennial; stem 3-8 dm. high, striate and angled, glabrous; leaves 10-18 cm. long, ascend- 

 ing; stipules deltoid, about 5 mm. long, membranous; leaflets 11-35, oblong to oval, 1-2 cm. 

 long, 3-8 mm. wide, acute at the base, rounded or rarely retuse at the apex, sparingly strigose 

 beneath, glabrous above; peduncles 8-15 cm. long; racemes dense, 3-5 cm. long ; bracts lance- 

 subulate, 1-2 mm. long; flowers reflexed in age; calyx-tube 4 mm. long, appressed-pubescent, 

 sometimes slightly black-hairy, the lobes subulate, with a deltoid base, 1.5-2 mm. long; corolla 

 ochroleucous, 10-12 mm. long, similar to that of P. densifolia; pod obliquely ovoid, 3 cm. long, 

 1.5-2 cm. wide, minutely strigose. 



Type locality: Fallbrook, California. 



Distribution: Southern California. 



Illustrations: M. E. Jones, Contr. W. Bot. 10: pi. 9; Rev. Astrag. pi. 13, f. 56; pi. 15, f. 56. 



