Part 5, 1929] FABACEAE: GALEGEAE 271 



the former obliquely oblanceolate, falcate, with an acute basal auricle, twice as long as the claw; 

 blade of the keel-petals lunate, with a lanceolate tip; pod fully 2 cm. long and 3 mm. wide, 

 sessile, linear, straight, glabrous or sparingly white-strigose when young; seeds oblong-reniform, 

 fully 2 mm. long and 1.5 mm. broad. 



Type locality: Estes Park, Colorado. 

 Distribution: Colorado. 



38. Homalobus Hitchcockii Rydberg, sp. now 



A cespitose perennial; stems several, about 2 dm. high, branched at the base, sparingly 

 strigose; leaves erect, 10-13 cm. long, the rachis sulcate, sparingly strigose; stipules broadly 

 deltoid, acuminate; leaflets 9-15, lanceolate or lance-oblong, acute at each end, 1-2.5 cm. long, 

 2-5 cm. wide, glabrous above, strigulose beneath; peduncles 10-12 cm. long, erect; racemes 

 about 2 cm. long, few-flowered; bracts lance-subulate, 2 mm. long, slightly exceeding the 

 pedicels; calyx sparingly black-hairy, the tube 2-2.5 mm. long, the teeth subulate, 1.5 mm. 

 long; corolla cream-colored, the keel purple-veined and purple-tipped; banner about 9 mm. 

 long, obovate, strongly arcuate below the middle; wings 7 mm. long, the blade oblanceolate- 

 falcate; keel-petals 6 mm. long, the blade lunate, long-acute at the apex; pod oblanceolate in 

 outline, slightly arched, broadest one third from the apex, minutely black-strigulose, the lower 

 suture strongly arched. 



Type collected at Duck Creek, Eli. Nevada, August 17, 1913, Hitchcock 1344 (U. S. Nat. Herb, 

 no. 766659) 



39. Homalobus serotinus (A. Gray) Rydb. Mem. N. Y. Bot. 

 Gard. 1: 248. 1900. 



Astragalus serotinus A. Gray, Pacif. R. R. Rep. 12: 51. 1860. 

 Tragacantha serotina Kuntze, Rev. Gen. 948. 1891. 



Astragalus decumbens serotinus M. E. Jones, Contr. W. Bot. 10: 58. 1902. 

 Phaca serotina Piper, Contr. U. S. Nat. Herb. 11: 374. 1906. 

 Astragalus campestris serotinus M. E. Jones, Rev. Astrag. 75. 1923. 



A perennial, with a branched rootstock; stem adsurgent or erect, sparingly strigose, in 

 age often glabrate; leaves 7-15 cm. long, ascending; upper stipules lanceolate, green, 2-3 mm. 

 long, the lower scarious, triangular, connate; leaflets 9-21, linear, glabrous above, strigose 

 beneath, 1-2.5 cm. long, 1-3 mm. wide; racemes lax, with the peduncle 1-1.5 dm. long, S-20- 

 flowered; bracts lanceolate, 2 mm. long; calyx white-hairy, the tube 2-2.5 mm. long, the teeth 

 subulate, less than 1 mm., often only 0.5 mm. long; corolla white, the keel tipped with purple; 

 banner obovate, retuse, 8-9 mm. long; wings 7 mm. long, the blade obliquely oblanceolate, 

 slightly longer than the claw; keel-petals similar, but broader, with a lanceolate tip and a 

 rounded basal auricle; pod strigose, linear, about 2 cm. long, 3 mm. wide, acute at each end, 

 sessile; seeds oblong, 2 mm. long, brown. 



Type locality - : Near Columbia River, lat. 48°, Washington. 



Distribution: Alberta and British Columbia to Oregon and western Montana; Colorado (?). 

 Illustrations: Pacif. R. R. Rep. 12: pi. 5; M. E. Jones, Contr. W. Bot. 10: pi. 2; Rev. 

 Astrag. pi. 3. 



40. Homalobus Palliseri (A. Gray) Rydb. Mem. N. Y. Bot. 

 Gard. 1: 248. 1900. 



Astragalus Palliseri A. Gray, Proc Am. Acad. 6: 227. 1864. 



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



Astragalus serotinus Palliseri F. Macbr. Contr. Gray Herb. 65: 37. 1922. 



A perennial, with a cespitose rootstock, branched near the surface; stem 2-3 dm. high, 

 slender, sparingly strigose; leaves 5-10 cm. long, ascending; upper stipules lanceolate, green, 

 nearly distinct, the lower scarious, triangular, more or less connate ; leaflets 9-19, linear or lance- 

 linear, 1-2 cm. long, 1-2 mm., rarely 3 mm. wide, glabrous above, strigose beneath, obtuse or 

 acutish; racemes lax, 7-15-flowered, including the peduncle 1-2 dm. long; bracts lanceolate, 

 about 2 mm. long; calyx strigose with mixed white and dark hairs, the tube 2-2.5 mm. long, the 

 teeth subulate, less than 1 mm. long, often only 0.5 mm. long; corolla white, only the keel 



