278 NORTH AMERICAN FLORA [Volume 24 



58. Homalobus Whitedii (Piper) Rydb. Bull. Torrey Club 

 51: 16. 1924. 



Astragalus speirocarpus falciformis A. Gray, Bot. Calif. 1: 152. 1876. Not .4. falciformis Desf. 



1802. 

 Astragalus speirocarpus curvicarpus Sheldon. Minn. Bot. Stud. 1: 125. 1894. 

 Astragalus Gibbsii falciformis M. E. Jones, Contr. W. Bot. 8: 23. 1898. 

 Astragalus Gibbsii curvicarpus M. E. Jones. Contr. W. Bot. 10: 62. 1902. 

 Astragalus Whitedii Piper, Bull. Torrey Club 29: 224. 1902. 

 Homalobus curvicarpus A. Heller, Muhlenbergia 2: 86. 1905. 

 Astragalus curvicarpus F. Maebr. Contr. Gray Herb. 65: 38. 1922. 



A perennial, with a cespitose woody caudex; stems decumbent at the base, 2-4 dm. high, 

 striate, short-pubescent with incurved hairs; leaves 4-7 cm. long; stipules triangular or deltoid, 

 3 mm. long; leaflets 9-13, obovate or obcordate, 5-15 mm. long, 3-8 mm. wide, short-hairy on 

 both sides, with incurved hairs, obtuse to retuse at the apex; peduncles 5-10 cm. long; racemes 

 5-8 cm. long, 10-lS-flowered; bracts lanceolate, 2 mm. long, nearly equaling the pedicels; calyx 

 short-pilose, the tube 8 mm. long, gibbous on the upper side, the two upper teeth triangular, 

 the three lower lanceolate, 1 mm. long; corolla ochroleucous; banner 15 mm. long, obovate, 

 with a rather long claw; wings of about the same length, the blades obliquely oblanceolate, with 

 a rounded basal auricle, about as long as the claws; keel-petals about 12 mm. long, the blade 

 nearly semicircular, with a rounded apex and a rounded basal auricle, shorter than the claw; 

 pods short-pubescent, stipitate, the stipe about 1 cm. long, the body strongly curved in a 

 semicircle or more, 2-3 cm. long, 3 mm. wide; seeds obliquely reniform, 3 mm. long, nearly 2 

 mm. broad. 



Type locality: Sierra County, California. 



Distribution: Idaho, Oregon, Nevada, and northern California. 



Illustrations: M. E. Jones, Contr. W. Bot. 10: pi. 12 (except lower pod) ; Rev. Astrag. pi. 29. 



59. Homalobus subglaber (A. Gray) Rydb. Bull. Torrey Club 

 51:17. 1924. 



Astragalus collinus subglaber A. Gray; Rydb. Bull. Torrey ClubSl: 17, as synonym. 1924. 



A perennial, with a cespitose caudex; stems 2-3 dm. high, striate, glabrous or nearly so; 

 stipules deltoid, distinct, 2 mm. long; leaves 4-8 cm. long; leaflets 11-25, oblong, obovate, or 

 oblanceolate, 5-10 mm. long, 2-5 mm. wide, glabrous above, sparingly short-hairy beneath, 

 often only on the margins and midrib, truncate or retuse at the apex, acute at the base; pedun- 

 cles 5-10 cm. long; raceme 3-5 cm. long; bracts lanceolate, 2 mm. long; calyx villous, the tube 

 8 mm. long, gibbous on the upper side, the upper two teeth broadly triangular, the lower three 

 lanceolate, 0.5 mm. long; corolla ochroleucous, 14 mm. long, similar to that of H. collinus; 

 pod sparingly short-pubescent, stipitate, the stipe 8-10 mm. long, the body arcuate, 12-18 

 mm. long, 3 mm. wide. 



Type locality: John Day River, Oregon. 



Distribution: Northern Oregon. 



Illustration: M. E. Jones, Rev. Astrag. pi. 29, f. a (as A. collinus). 



60. Homalobus speirocarpus (A. Gray) Rydb. Bull. Torrey Club 

 51: 18. 1924. 



Astragalus speirocarpus A. Gray. Proc. Am. Acad. 6: 225. 1864. 



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



Phaca speirocarpa Piper, Contr. U. S. Nat. Herb. 11: 370. 1906. 



A perennial; stems 2-3 dm. high, branched, grayish-strigose ; leaves 3-6 cm. long; stipules 

 broadly triangular, 1-2 mm. long, free; leaflets 9-19, oblong or cuneate-oblong, 4-12 mm. long, 

 2-4 mm. wide, cinereous-strigose, truncate or retuse at the apex; peduncles 4-6 cm. long; 

 racemes short, few-flowered; calyx strigose, the hairs especially at the margin and on the teeth 

 often black, the tube 4.5 mm. long, 3 mm. broad, the teeth deltoid, less than 1 mm. long; 

 corolla yellowish; banner 15-18 mm. long, obovate, retuse; wings 14-15 mm. long, the blade 

 oblong, slightly falcate, with a large reflexed auricle ; keel-petals 12 mm. long, the blade obliquely 

 obovate, obtuse; pod stipitate, strigose, strongly reticulate, the sutures strong, the stipe 



