FABACEAE. 
209 
Leaflets linear or linear-oblong, acute, ascending. 
Leaflets narrowly linear, silvery-canescent. 
Low and very cespitose, 1-2 dm. high; pods about 1.5 cm. long; keel 
with a very narrow end. 8. H. camporum. 
Tall, 3-4 dm. high, more simple; pods 2-2.5 cm. long; keel with a 
broader end. 9. H. campestris. 
Leaflets oblong or lanceolate, strigose but not canescent; terminal leaflet 
longer, tapering into the rachis without a distinct articulation; racemes 
long and lax. 10. H. decurrens. 
Leaflets, at least of the lower leaves, oval or elliptical, spreading. 
ii. H. hylophilus. 
Calyx-teeth triangular, Y^-Vz as long as the tube; leaflets linear. 
Low, depressed; pods 12-15 mm. long, sessile. 12. H. tenuifolius. 
Taller, 2 dm. or more high; pods over 15 mm. long, often slightly stipitate. 
13. H. junciformis. 
Flexuosi. 
Pod oblong, over 5 mm. in diameter. 
Inflorescence short; flowers about 15 mm. long; pod glabrous. 
( 14. H. Hallii. 
Inflorescence elongated and lax; flowers about 10 mm. long; pod pubescent. 
15. H. Fendleri. 
Pod linear, 2-3 mm. thick. 
Pod abruptly contracted into a short or obsolete stipe. 
Stem decumbent; stipe minute or obsolete. 16. H. dexuosus. 
Stem erect; stipe almost equalling the calyx. 17. H. proximus. 
Pod gradually tapering into the short stipe. 18. H. Salidae. 
One species. 
Macrocarpi. 
-pro 
Crop 
19. H. macrocarpus 
1. Homalobus caespitosus Nutt. ( Astragalus caespitosus A. Gray.) On 
dry hills from Ass. and Mont, to Colo, and Utah.—Alt. 4000-6000 ft.— 
Livermore, Larimer Co.; north of La Porte. 
2. Homalobus grallator (S. Wats.) Rydb. ( A . grallator S. Wats.) On 
river banks from Colo, to Nev.—Steamboat Springs. 
3. Homalobus wingatanus (S. Wats.) Rydb. ( A . Wingatanus S. Wats.) 
On dry hills in S. Colo, and N. Mex.—Mancos. 
4. Homalobus Clementis Rydb. In the mountains of Colo.—Alt. up to 
10,000 ft.—Marshall Pass; Sangre de Cristo; Big Creek Gulch. 
5. Homalobus tenellus (Pursh) Britton. ( Astragalus tenellus Pursh; As¬ 
tragalus multidorus (Pursh) A. Gray) On plains and hills from Minn., Sask. 
and Yukon to Neb., Colo, and Nev.—Alt. 4000-10,000 ft.—Near Empire; 
Ward, Boulder Co.; Swallows, between Canon City and Pueblo; Estes 
Park; near mouth of Leroux Creek; Middle Park; Ft. Collins; near Boul¬ 
der; mountains between Sunshine and Ward; Marshall Pass. 
6. Homalobus acerbus (Sheld.) Rydb. (A. acerbus Sheld.) In the 
mountains of Colo.—Alt. about 8000 ft.—Glenwood Springs. 
7. Homalobus decumbens Nutt. ( A. decumbcns A. Gray) In the moun¬ 
tains of Colo, and Wyo.—Steamboat Springs. 
8. Homalobus camporum Rydb. On plains and hills from Alb. to Colo, 
and Utah.—Alt. 8000-10,000 ft.—Grayback mining camps and Placer Gulch; 
North Park. 
9. Homalobus campestris Nutt. (A. campestris A. Gray; A. convallarius 
Greene) On plains from Mont, and B. C. to Colo, and Utah.—Alt. up to 
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