Part 6, 1929] FABACEAE: GALEGEAE 357 



2-2.5 mm. long; corolla S mm. long, white or tinged with purple, the keel purple-tipped; 

 banner broadly obovate; wings nearly as long, the blade obliquely oblanceolate-arcuate, with a 

 large basal auricle; keel-petals broader, strongly arcuate, rounded at the apex; pod sessile, 

 villous with long hairs, obliquely ovoid, 12-14 mm. long, the lower sutuie strongly arched and 

 gibbous, the upper more or less recurved. 



Type locality: Ham's Fork of the Colorado. Wyoming. 

 Distribution: Western Wyoming and northern Utah. 

 Illustration: M. E. Jones, Rev. Astrag. pi. S,f. 35. 



76. Phaca Pulsiferae (A. Gray) Rydberg. 



Astragalus Pulsiferae [" Pulsiferi"] A. Grav, Proc. Am. Acad. 10: 69. 1874. 

 Tragacantha Puis, ferae Kuntze, Rev. Gen. 947. 1891. 



Perennial, with a thick woody root and cespitose caudex; stems rather slender, villous, 

 branched, 1-2 dm. long; leaves 2-4 cm. long, the rachis villous; stipules broadly deltoid, acumi- 

 nate, distinct, 2 mm. long; leaflets 5-11, obovate-cuneate, often emarginate, 5-10 mm. long, 

 villous; peduncles 1-2 cm. long; racemes 3-5 flowered; calyx villous, the tube 1.5-2 mm. long, 

 the lobes subulate, 2 mm. long; corolla white, purple-tinged, 6 mm. long; banner obovate, 

 emarginate; wings much shorter, the blade oblanceolate ; keel-petals short and broad, strongly 

 incurved, the apex purple and obtuse; pod sessile, long-villous, 1.5 cm. long, obliquely ovoid, 

 strongly arched, gibbous on the lower suture, the upper straight or slightly upcurved. 



Type locality: Sierra and Plumas counties. California. 

 Distribution: Northern Sierra Nevada, California. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 8, f. 33. 



19. Pychnostachyae. Stout erect perennials, with leafy stems. Racemes dense, spike- 

 like or head-like. Calyx somewhat gibbous, the teeth subulate. Corolla ochroleucous 

 or white. Pod ovoid in outline, sessile, rather small, compressed, acute on the upper or 

 both margins, few-seeded. 



77. Phaca pychnostachya (A. Gray) Rydberg. 



Astragalus pychnostachyus A. Gray, Proc. Am. Acad. 6: 527. 1865. 

 Tragacantha pychnostachya Kuntze, Rev. Gen. 947. 1891. 



Perennial; stem sometimes woody below, 5-10 dm. high, often tinged with brown or purple, 

 more or less short-villous, canescent; leaves 5-15 cm. long, spreading, the rachis villous-canes- 

 cent ; stipules scarious, distinct, deltoid, acuminate, 4—5 mm. long ; leaflets 1 5-33, rather crowded, 

 elliptic or oblong, 1-2 cm. long, 2-7 mm. wide, densely villous-canescent, obtuse or mucronate; 

 peduncles 3-5 cm. long, stiff, nearly erect; racemes dense, 3-5 cm. long, the flowers and fruit 

 densely crowded; calyx villous, the tube somewhat gibbous above, 4 mm. long, the lobes subu- 

 late, 2 mm. long; corolla ochroleucous; banner obovate, only slightly exceeding the other petals; 

 blade of the wing-petals obliquely obovate, with a large basal auricle, about equaling the claw; 

 keel-petals similar, but more arcuate and with a smaller auricle; pod ovoid (originally described 

 as turgid-lenticular), beaked, 1 cm. long, 5-6 mm. broad, glabrous, somewhat reticulate; seeds 

 brown, obliquely round-reniform, 2.5 mm. long. 



Type locality- : Baulinas [Bolinas] Bay, California. 

 Distribution: Central and southern California, near the coast. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 10, f. 45. 



78. Phaca lanosissima Rydberg, sp. now 



Perennial; stem stout, 4-6 dm. high, grayish-canescent, strict; leaves spreading, 5-10 cm. 

 long; stipules deltoid, reflexed, 4—5 mm. long; leaflets 25-31, crowded, oblong, silvery-silky, 

 1-2 cm. long, 4-6 mm. wide, rounded at the apex; peduncles 2-3 cm. long; racemes dense, spike- 

 like, 2-3 cm. long; bracts lanceolate, 1-2 mm. long; calyx white-pilose, the tube 4 

 mm. long, the teeth lanceolate, 1—1.5 mm. long; corolla ochroleucous, about 1 cm. 

 long; banner only slightly upcurved, obovate; wings slightly shorter, the blade obovate, 

 equaling the claw, with a large basal auricle; keel-petals similar, broader and more rounded; 



