Standley: Fungi of New Mexico 
155 
Wooton 542. On stems of Ephedra Torreyana S. Wats.: Bu- 
chanan, Aug. 12, 1909, IV 00 ton. This rust is extremely common 
upon Ephedra trifurca in southern New Mexico. Because of its 
large size and bright orange color it is very conspicuous. Dr. 
Arthur states that no clue to the telial host has yet been obtained. 
Phragmidium imitans Arthur 
On leaves of Ruhus arizonicus (Greene) Rydb. : Cloudcroft, 
Aug. 8, 1899, Wooton; Brazos Canyon, Aug. 31, 1914, Standley & 
Bollman loppp. 
Phragmidium montivagum Arthur 
On leaves of Rosa Fendleri Crep. : Pecos National Forest, 1908, 
Standley. On leaves of Rosa sp. : Brazos Canyon, Aug. 20, 1914, 
Standley & Bollman 106^8. To be expected in New Mexico on 
Rosa Maximiliani, upon which it has been found in Colorado. 
Phragmidium occidentale Arthur 
On leaves of Rubacer parznflorum (Nutt.) Rydb.: Winsor’s 
Ranch, July 4, 1908, Standley 4178; Carrizo Mts., August, 1911, 
Standley 7738a. 
Phragmidium Peckianum Arthur 
On leaves of Oreobatus deliciosus (James) Rydb. : Sierra 
Grande, June 19, 1911, Standley 6203. This is the only New 
Mexican locality known for this Oreobatus. Phragmidium Peck- 
ianum is reported by Arthur from New Mexico also upon Oreo- 
batus neomexicanus (A. Gray) Rydb. (N. Am. FI. 7: 165. 
1912). 
Phragmidium Potentillae (Pers.) Karst. 
On leaves of Potentilla strigosa Pall. : Ensenada, Sept. 10, 1914, 
Standley & Bollman J1227. The species is reported (from 
Maine) upon Potentilla monspeliensis, a species common in New 
Mexico. 
