FLOWERING PLANTS AND FERNS OF ARIZONA 587 



1. Viola nephrophylla Greene, Pittonia 3: 144. 1896. 



Coconino County to Cochise and Pima Counties, 5,000 to 9,200 feel , 

 rich soil of coniferous forests, April to June. Canada to New Mexico, 

 Arizona, and California. 



Represented in Arizona chiefly by var. arizonica (Greene) Kearney 

 and Peebles (V. arizonica Greene), characterized by sparsely pubescent 

 or at least ciliate leaf blades, these glabrous in the typical form. The 

 type of V. arizonica was collected near Fort Verde, Yavapai County 

 (Mearns in 1888). 



2. Viola pedatifida G. Don, Hist, Dichl. PL 1: 320. 1831. 

 Mogollon Escarpment, Coconino (?) County (Mearns 44), along a 



stream in pine forest, May. Wisconsin to Saskatchewan, south to 

 Oklahoma, New Mexico, and Arizona. 



Larkspur violet, The presence of this plant in a pine forest in 

 central Arizona is remarkable. The species belongs mainly to the 

 plains and prairies east of the Rocky Mountains. 



3. Viola nuttallii Pursh, Fl. Amer. Sept. 174. 1814. 



White Mountains (Apache County), Pagumpa Springs (Mohave 

 County) , Ash Fork (Yavapai County) ; also reported from Fort Verde 

 (Yavapai County), 5,000 feet or higher, April and May. Manitoba 

 to Missouri and central Arizona. 



4. Viola venosa (S. Wats.) Rydb., X. Y. Bot. Gard. Mem. 1: 262. 1900. 



Viola nuttallii var. venosa S. Wats, in King, Geol. Expl. 40th 

 Par. 5: 35. 1871. 



A collection on North Peak, Mazatzal Mountains, Gila County, 

 6,000 feet (Collom 48), has been identified by Baker and Clausen 

 (m.s.) as "a very luxuriant form, nearest to subsp. atriylicijolia 

 (Greene) Baker and Clausen." Montana to Washington, south to 

 Colorado, Arizona, and California. 



5. Viola adunca J. E. Smith, Rees's Cycl. 37: no. 63. 1817. 



Near Flagstaff, Coconino County (MacDougal 132), Santa Catalina 

 Mountains, Pima County (Peebles and Harrison 2223), about 7,500 

 feet, yellow pine forest, June to July. Canada to New Mexico, 

 Arizona, and California. 



6. Viola canadensis L., Sp. PL 936. 1753. 



Viola muriculata Greene, Pittonia 5: 28. 1902. 



Apache County to Coconino County, south to Cochise and Pima 

 Counties, 6,000 to 9,000 feet, rich moist soil of coniferous forests, 

 April to August, type of V. muriculata from the San Francisco Peaks 

 (Greene in 1889). Canada, southward in the mountains to South 

 Carolina, New Mexico, and Arizona. 



V. muriculata is a more pubescent form with leaves puberulent on 

 both faces, often slightly scabrous above, and stems also usually 

 puberulent, It intergrades completely with typical V canadensis. 

 Specimens collected at base of tin 4 San Francisco Peaks and on the 

 Mogollon Escarpment (Mearns 19, 94) were described as V canaa\ nsis 

 var. scariosa Porter, characterized as having exceptionally large, 

 scarious stipules. 



