438 Arthur and Kern : Peridermium 



Mexico, 1878, E. Palmer T02J (specimen in herbarium of the N. 

 Y. Bot. Garden); Mexico, March, 1885, C. G. Pringle (specimen 

 in herbarium of Iowa State College). 



On Ephedra trifitrca Torr., mesa near Las Cruces, New 

 Mexico, July 5, 1897, 4000 ft. alt, £ 0. Wooton 542 ; plain be- 

 tween Las Cruces and Organ Mountains, New Mexico, August 

 22, 1897, J. D. Tinsley (specimen in herbarium of N. Y. Bot. 



Garden). 



On Ephedra calif omica S. Wats., San Diego, California, March 



16, 1882, Marcus E. Jones jojj ; Lower California, Mexico, Jan- 

 uary, 1883, L. F. Ward (specimen in herbarium of N. Y. Bot. 

 Garden) ; Cabezo, Colorado Desert, Riverside County, California, 



• 



April 1 1, 1896, S. B. Parish, communicated by E. W. D. Holway. 



On Ephedra Torreyana S. Wats., Angeles Bay, Lower Califor- 

 nia, Mexico, September, 1887, •£• P&lmer. 



A common and conspicuous species along the southwestern 

 border of the United States and southward into Mexico. In 

 Thuemen's monograph of the genus Peridermium, page 323, the 

 species is credited to South Carolina (Ravenel), which is clearly an 

 error in citing the type collection. 



Purdue University, 



Lafayette, Indiana. 



