have not been recognized. This useless synonymy is not re- 

 peated here. 

 Tragacanthacei p. 8. 

 Tragacanthse p. 8. 

 Triphylli pp. 12, 86. 

 Scytocarpi p. 11. 



Tropical Life Zone pp. 31, 40, 53. 

 Uinta Region p. 46. 

 Uliginosi pp. 9, 166. 



Upper Temperate Life Zone pp. 31, 32, 46. 

 Vesicarii p. 8. 

 Wasatch Region p. 46. 



Xylophacos Rydberg in Small's Fl. S. E. U. S. 619 (1903) p. 17. 

 amphioxys (Gray) Rydberg Torr. Bull. 32 662 (1905) is A. am- 



phioxys. 

 aragalloides Rydberg Torr. Bull. 34 48 (1907) is A. amphioxys. 

 argophyllus (Nutt.) Rydberg Torr. Bull. 34 49 (1907) is A. argo- 



phyllus. 

 cibarius (Sheldon) Kydbcig Torr. Bull. 34 49 (1907) is A. ciba- 



rius. 

 coccineus (Parry) Heller Muhl. 2 217 (1906) is A. coccineus. 

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



Purshii. 

 cuspidocarpus (Sheldon) Rydberg Torr. Bull. 40 48 (1913) is A. 



Missouriensis. 

 cymboides (Jones) Rydberg Torr. Bull. 40 49 (1913) is A. cym- 



boides. 

 inflexus (Dougl.) Rydberg Torr. Bull. 40 49 (1913) is A. inflexus. 

 Missouriensis (Nutt.) Rydberg Torr. Bull, in Small's Fl. S. E. U. 



S. 620 (1903) is A. Missouriensis. 

 Musiniensis (Jones) Rydberg Torr. Bull. 40 49 (1913) is A. Mu- 



siniensis. 

 Newberryi (Gray) Rydberg Torr. Bull. 32 662 (1905) is A. New- 



berryi. 

 Parryi (Gray) Rydberg Torr. Bull. 32 662 (1905) is A. Parryi. 

 puniceus (Osterhout) Rydberg Torr. Bull. 32 662 (1905) is A. 



Missouriensis. 

 Purshii (Dougl.) Rydberg Torr. Bull. 32 662 (1905) is A. Purshii. 

 pygniffius (Nutt.) Rydberg Torr. Bull. 32 662 (1905) is A. pyg- 



mffius. 

 Shortianus (Nutt.) Rydberg in Small's Fl. S. E. U. S. 1332 (1903) 



is A. Shoi'tianus. 

 Uintensis (Jones) Rydberg Torr. Bull. 32 662 (1905) is A. argo- 

 phyllus. 

 Utahensis (Torr.) Rydberg Torr. Bull. 40 49 (1913) is A. Utah- 



ensis. 

 vespertinus (Sheldon) Rydberg Torr. Bull. 32 662 (1905) is A. 



amphioxys var. 

 Watsonianus (Kuntze) Rydberg Torr. Bull. 40 49 (1913) is A. 



Newberryi var. 

 Zionis (Jones) Rydberg Torr. Bull. 40 49 (1913) is A. Zionis. 



