80 MISCELLANEOUS CIRCULAR 92, U. S. DEPT. OF AGRICULTURE 



NAMES IN USE 



Northern Alder (lit.). Alder. 



Mountain Alder (lit.). Sitka Alder. 



* Alnus rubra Bongard. Red Alder. 



Range. — From southeastern Alaska (through islands and coast ranges of 

 British Columbia, western Washington, and Oregon) to southern California 

 (coast ranges to Santa Inez Mountains) . 



Note on nomenclature. — Formerly designated as Alnus oregona Nuttall. 



NAMES in use 



Alder (Calif., Oreg.). Western or Red Alder. 



Red Alder (Calif., Oreg.). Oregon Alder (lit.). 



Alnus tenuifolia Nuttall. Mountain Alder. 



Range. — From British Columbia (Francis Lake to Lower Fraser River) east- 

 ward in the valley of the Saskatchewan River to Prince Albert; southward 

 through the Rocky Mountains to northern New Mexico. 



NAMES IN USE 



Mountain Alder (lit.). Tree- Alder (lit.). 



Alder (Idaho). Paper-leaf Alder (lit.). 



Tag Alder (Utah). 



* Alnus rhombifolia Nuttall. White Alder. 



Range. — From northern Idaho to the eastern slope of the CascadeMountains 

 of Washington and southeastern Oregon and southward through California 

 (coast ranges, western slopes Sierra Nevada, and the San Bernardino, San 

 Jacinto, and Cuyamaca Mountains). 



NAMES IN USE 



Alder (Calif ., Oreg., Idaho). Rhombic-leaved Alder (lit.). 



Western or California Alder (Idaho). White Tree- Alder (lit.). 

 Mountain Aldjer. White Alder (lit.). 



Alnus rhombifolia bernardina Munz & Johnston. 



Range. — Southern California (San Bernardino County, Santa Ana River at 

 junction of the South Fork, at elevations of from 5,000 to 7,000 feet). Distin- 

 guished by its small, heavily woolly, doubly toothed leaves. 



Alnus oblongifolia Torrey. Mexican Alder. 



Range. — Southern New Mexico and southern and northern Arizona (canyons 

 of the Santa Catalina, Chiricahua, and Rincon Mountains); Oak Creek Canyon; 

 northern Mexico. 



Note on nomenclature. — Formerly designated as Alnus acuminata Hum- 

 boldt, Bonpland, and Kunth, which is a different species inhabiting Peru and 

 Bolivia and extending northward to southern Mexico. 



NAMES IN USE 



Oblong-leafed Alder (lit.). Mexican Alder. 



Alder. ' Lanceleaf Alder. 



Alnus maritima (Marshall) Muehlenberg. 57 Seaside Alder. 



Range. — Southern Delaware and Maryland (Nanticoke River near Seaford, 

 Del.; Wicomico River near Salisbury, Md.); Oklahoma (valley of Red River in 

 Johnson and Bryan Counties). 



" Brittonand Shafer (North Am. Trees, 264, 1908) record Alnus noveboracensis Britton, New York Alder 

 which occurs in southeastern New York, and, it is said, probably ranges north an \ sou lh of this nigion. 

 It is a small tree or shrub and when first discovered was supposed to be Alnus incana ( I. inn; nus) Willdenow, 

 which, as it occurs in northeastern North America and United States, is a shn b. 



