BRITTON AND ROSE] OPUNTIOIDEAE OF NORTH AMERICA 53 X 



OPUNTIA PHAEACANTHA MAJOR Engelm. 

 Opuntia phaeacantha major Engelm. Proc. Am. Acad. 3:293. 1856. 

 Type locality : Mountainous regions near Santa Fe. 



OPUNTIA MOHAVENSIS Engelm. 



Opuntia mohavensis Engelm. Proc. Am. Acad. 3:293. 1856. 



Type locality : On the Mohave, west of the Colorado, California. 

 Distribution: Known only from the type locality. 

 Illustration : Pac. R. Rep. 4 : pi. 9. figs. 6-8. 



OPUNTIA FUSCOATRA Engelm. 



Opuntia fuscoatra Engelm. Proc. Am. Acad. 3: 297. 1856. 



Type locality: Sterile places of prairies west of Houston, Texas. 

 Distribution : Known only from the type locality. 

 Illustration : Pac. R. Rep. 4 : pi. 11. fig. 4. 



OPUNTIA CAMANCHICA Engelm. & Bigel. 



Opuntia camanchica Engelm. & Bigel. Proc. Am. Acad. 3:293. 1856. 



Type locality : Llano Estacado, on the Upper Canadian River. 



Distribution : Texas to Colorado and Arizona. Reported from 

 Western Kansas. 



Illustrations: Pac. R. Rep. 4: pi. 8. figs. 1-3; pi. 22. figs. 12-13; 

 111. Fl. fig. 2330. 



OPUNTIA TORTISPINA Engelm. 



Opuntia tortispina Engelm. Proc. Am. Acad. 3:293. 1856. 



Type locality : On the Comanche Plains, near the Canadian River. 

 Distribution: Nebraska to Texas. 



Illustrations: Pac. R. Rep. 4: pi. 8. figs. 2, 3; pi. 23. figs. 1-3; 

 111. Fl. fig. 2529. 



OPUNTIA ENGELMANNI Salm-Dyck 



Opuntia engelmanni Salm-Dyck; Engelm. Bost. Journ. Nat. Hist. 6: 

 207. 1850. 



Type locality : From El Paso to Chihuahua. 

 Distribution: Chihuahua, New Mexico, Texas. 

 Illustrations : Cact. Mex. Bound, pi. 75. figs. 1-4; Bull. Torr. Club 

 32: pi. 10. figs. 10-13. 



An examination of the plant collected by Wislizenus north of 



