parviflorus (Pursh) Rydberg Torr. Bull. 40 51 (I'Jlo) is A. par- 

 viflorus. 

 Microlobi p. 14. 



Middle Temperate Life Zone pp. 31, 34, 48. 

 Mog-ollon Region pp. 38, 4G. 

 Mojave-Colorado Region p. 44. 

 Mojave Region p. 40. 

 Mollissimi pp. 9, 230. 

 Montana-Idaho-Wyoming Region p. 37. 

 Morphology p. 4. 

 Navajo Basin p. 41. 

 New England Region p. 47. 

 New Mexican Region p. 47. 

 Nomenclature p. 59. 

 Northern Plains Region p. 43. 

 Ocreati pp. 10, 239. 

 Ochroleuci p. 8. 

 Onix Medic, in Vorles Churpf. Phys. Ges. 2 378 (1787). 



Mulfordse (Jones) Rydberg Torr. Bull. 40 51 (1913) is A. Mul- 

 fordas. 

 Onobrychoidei, pp. 8, 9. 

 Onobrychoides p. 10. 

 Oocarpi p. 11. 



Oregon-Washington-Coast Region p. 44. 

 Oroboidei p. 10. 

 Orophaca Britton in Br. & Br. Fl. 2 306 (1897). 



aretioides (Jones) Rydberg Torr. Bull. 32 668 (1905) is A. se- 

 ricoleucus var. 



caespitosa (Nutt.) Britton in Br. & Br. Fl. 2 306 (1897) is A. 

 triphyllus. 



sericea (Nutt.) Britton in Br. & Br. Fl. 2 307 (1897) is A. se- 

 ricoleucus. 



tridactylica (Gray) Rydberg Torr. Bull. 32 668 (1905) is A. se- 

 ricoleucus var. 

 Pacific Coast Region p. 41. 

 Pacific Slope Region p. 41. 

 Pachyphyllus p. 14. 

 Pectinati p. 11. 

 Phaca L. p. 11. 



aboriginum (Rich.) Hook. Fl. Bor. Am. 1 143 (1830) is A. aborig- 

 inum. 



adsurgens (Pail.) Piper Fl. Wash. 372 (1906) is A. adsurgens. 



agrestis (Dougl.) Piper Fl. Wash. 372 (1906) is A. agrestis. 



alpina (L.) Piper Fl. Wash. 371 (1906) is A. Andinus Nutt. 



alpina L. 755 (1753) is A. alpinus Sheldon. 



ampuilaria (Watson) Rydberg Torr. Bull. 40 47 (1913) is A. 

 ampuUarius. 



Andina Nutt. in T. & G. Fl. 1 345 (1838) is A. Andinus. 



annua Geyer Lond. Jour. Bot. 6 213 (1847) is A. Geyeri. 



argophylla Nutt. in T. & G. Fl. 1 342 (1838) is A. triphyllus. 



arrecta (Gray) Piper Fl. Wash. 370 (1906) is A. arrectus. 



Artemisiarum (Jones) Rydberg Torr. Bull. 40 48 (1913) is A. 

 Beckwithii. 



artipes (Gray) Rydberg Torr. Bull. 32 664 (1905) is A. oophorus. 



astragalina DC. Ast. 52 (1802) is A. Andinus. 



Beckwithii (T. & G.) Piper Fl. Wash. 371 (1906) is A. Beckwithii. 



bisulcata Hook. Fl. Bor. Am. 1 145 (1834) is A. bisulcatus. 



Bodini (Sheldon) Rydberg Torr. Bull. 32 665 (1905) is A. debilis. 



brachycarpa (Nutt.) Britton Mem. Torr. Club 5 200 (1894) is A. 

 simplicifolius. 



caespitosa Nutt. Gen. 2 98 (1818) is A. triphyllus. 



Canadensis (L.) MacMillan Metasperm. 325 (1892) is A. Cana- 

 densis. 



^ 



