scaphoides (Jones) Rydberg Torr. Bull. 40 52 (1913) is A. ar- 

 rectus var. 

 Physondra dispar (Nutt.) Raf. Atl. Jour. 145 (1832) is A. tenellus. 



longifolia (Pursh) Raf. Atl. Jour. 145 (1832) is A. pictus. 

 Plains Region p. 39. 

 Podo-sclerocarpi pp. 8, 11, 142. 

 Present Revision p. 17. 

 Preussii pp. 11, 152. 

 Pubescence p. 5. 

 Purpurascentes p. 8. 

 Radiciflori p. 8. 

 Reflexi p. 9. 



Reventi-Arrecti pp. 12, 158. 

 Rocky Mountain Region p. 41. 

 Rugocarpus p. 14. 

 Rydbergiella Fedde & Sydow Just. Bot. Jahresb. 33 pt. 1 534 (1903). 



Pattersoni F. & S. 1. c. is A. Pattersoni. 



praclonga (Sheldon) F. & S. 1. c. is A. Pattersoni var. 

 Sarcocarpi pp. 9, 236. 

 Scytocarpi p. 11. 

 Seriocophyllus p. 13. 

 Sesamei p. 8. 



Sierra Region pp. 38, 39, 46, 47. 

 Siskiyou Region p. 44. 

 Sparsiflori p. 128. 

 Spiesioider* p. 13. 

 Spruce Zone p. 47. 

 St. George Region p. 53. 

 Strigulosi p. 184. 

 Succumbentes p. 10. 

 Synocreati p. 8. 

 Systems of Classification p. 8. 

 Terms used p. 3. 

 Texan Region pp. 40, 44. 

 Tium Medic in Vorles Churpf. Phys. Ges. 2 373 (1787) p. 16. 



alpinum (L.) Rydberg Torr. Bull. 32 659 (1905) is A. Andinus. 



arrectum (Gray) Rydberg Torr. Bull. 40 49 (1913) is A. arrectus. 



atropubescens (C. & F.) Rydberg Torr. Bull. 40 49 (1913) is A. 

 arrectus. 



desperatum (Jones) Rydberg Torr. Bull. 32 660 (1905) is A. des- 

 peratus. 



distortum (T. & G.) Rydberg in Small's Fl. S. E. U. S. 619 (1903) 

 is A. distortus. 



Drummondii (Dougl.) Rydberg Torr. Bull. 32 659 (1905) is A. 

 Drummondii. 



eremiticum (Sheldon) Rydberg Torr. Bull. 40 49 (1913) is A. 

 arrectus var. 



intonsum (Sheldon) Rydberg in Small's Fl. S. E. U. S. 619 (1903) 

 is A. villosus. 



humistratum (Gray) Rydberg Torr. Bull. 32 660 (1905) is A. 

 humistratus. 



obcordatum (Ell.) Rydberg in Small's Fl. S. E. U. S. 619 (1903) 

 is A. obcordatus. 



racemosum (Pursh) Rydberg Torr. Bull. 32 659 (1905). 



scopulorum (Porter) Rydberg Torr. Bull, 32 659 (1905) is A. 

 scopulorum. 



sparsiflorum (Gray) Rydberg Torr. Bull. 32 660 (1905) is A. 

 sparsitlorus. 



variegatum Rydberg Torr. Bull. 34 47 (1907) is A. sparsifloi'us. 

 Topography p. 58. 



Tragacantha. All the species of Astragalus not in Phaca were re- 

 named as Tragacanthje by Kuntze Rev. Gen 2 (1891) but 



31 



