lentiginosum (Dougl.) Ryd. Torr. Bull. 40 50 (1913) is A. len- 
tiginosus. 
40 50 (1913) is A. lentiginosus var. : 
platytropis (Gray) Rydberg Torr. Bull. 40 50 (1913) is A. platy- 
tropis Gr. 
Death Valley Region p. 53. 
- Debiles p. 87. 
DeCandolle’s Revision p. 8. 
Didymocarpi pp. 9, 283. 
Diholcos.Rydberg Torr. Bull. 32 664 (1905) p. 16. ; f 
bisulcatus (Hook.) Rydberg Torr. Bull. 32 664 (1905) is A. bisul- 
catus. 
decalvans (Gandoger) Rydberg Torr. Bull. 32 664 (1905) is A 
bisulcatus. ; E 
Haydenianus (Gray) Rydberg Torr. Bull. 32 664 (1905 
Haydenianus. ; 
scobinatulus (Sheldon) Rydberg Torr. Bull. 40 51 (1918) is A. 
Haydenianus. 
Diphysi p. 9. E 
Dispermus p. 14. ; | 
Dissitiflori p. 8.. 
Eastern and Atlantic Region pp. 37, 39. 
Eastern Great Basin Region pp. 38, 39, 44, 
East Humboldt Region p. 46. 
Ecology p. 28. 
Effects of Ecological Factors p. 55. 
Eremiticus p. 14.  * 
Eriocarpi p: 11. 
Euastragalus p. 13. 
Famelicus p. 13. 
Flexuosi pp. 11, 192. 
Galegiformes pp. 8, 10, 246, 
Generic Segragation p. 15. 
Genetic Relationship p. 27. 
Gilá Region p. 54. 
Geoprumnon Rydberg, Small's Flora S. E. U. S. 616 (1903) p. 16. 
crassicarpum (Nutt.) Rydberg in Small's Fl. S. E. U. S. 616 (1903). 
is A. crassicarpus. à 
Mexicanum (DC.) Rydberg in Small's Fl. S. E. U. S. 616 (1903) is 
A. Mexicanus. 
pachycarpum (T. € G.) Rydberg in Small's Fl. S. E. U.S. 616 
(1908) is A. crassicarpus. * 
Plattense (Nutt.) Rydberg in Small's Fl. S. E. U. S. 615 (1903) 
is A. Plattensis. 
suceulentum (Rich.) Rydberg Torr. Bull. 32 658 (1905) is A. 
_ erassicarpus. : 
Terinesseense (Gray) Rydberg in Small’s Fl. S. E. U. S. 616 (1903) 
is A. Tennesseensis. 
Green River. Basin pp. 39, 43. 
Group Details p. 18. z 
Hamosa Medic in Vorles Churpf. Phys. Ges. 2 376 (1787). 
atrata (Watson) Rydbeg Torr. Bull. 34 48 (1907) is A. atratus. 
CE ue Recher in Small’s Fl. S. E. U. S. 618, 1332 (1903) is 
A anus. 
Mes Rydberg Torr. Bull. 34 48 (1907) is A. straturensis 
ones... 
Sie > A 
calyeoga (Torr.) Rydberg Torr. Bull. 40 50 (1913) is A. calycosus. - 
. leptocarpa (T. € G.) Rydberg in Small's Fl. S. E. U. S. 617 (1903) 
Erik is A. leptocarpus. : 
, Madheimeri (Eng.) Rydberg in Small’s FL S.E. U. 8. 617 (1903) 
EN MAR 
dheimeri. 
Rydberg in Small's Fl. BE Bid 617 (1903) is A. : 
