FLOWERING PLANTS AND FERNS OF ARIZONA 173 



20. Carex wootoni Mackenz., Smithsn. Inst. Misc. Collect. 65 7 : 1. 



1915. 



Apache, Coconino, and Graham Counties, 8,000 to 11,500 feet. 

 New Mexico and Arizona. 



May be at once recognized and differentiated from related species 

 by the fact that the scales are broadly hyaline-margined. 



21. Carex scoparia Schkuhr in Willd., Sp. PL 4: 230. 1805. 

 McNary, Apache County, 7,400 feet {Peebles and Smith 12477). 



Newfoundland to British Columbia, south to South Carolina, New 

 Mexico, Arizona, and Oregon. 



22. Carex athrostachya Olney, Amer. Acad. Arts and Sci. Proc. 7: 



393. 1868. 



Carex tenuirostris Olney in Parry, Amer. Nat. 8: 214. 1874. 



Coconino County, 6,700 to 8,400 feet, not rare. Saskatchewan to 

 Alaska, south to Colorado, Arizona, and California. 



23. Carex oreocharis Holm, Amer. Jour. Sci. ser. 4, 9: 358. 1900. 



Carex filifolia var. valida Olney ex L. H. Bailey in Coult., Man. 

 Rocky Mount. 374. 1885. 



Summit Ranch, San Francisco Peaks (Thornber 2955). Colorado 

 and Arizona. 



24. Carex filifolia Nutt., Gen. PL 2: 204. 1818. 



San Francisco Peaks (Coconino County), rare in Arizona. Mani- 

 toba to Yukon, south to Texas, Arizona, and Oregon. 



25. Carex leucodonta Holm, Amer. Jour. Sci. ser. 4, 16: 461. 1903. 

 Cochise, Santa Cruz, and Pima Counties, about 6,000 feet, type 



from the Huachuca Mountains (Lemmon 2904). Southern Arizona 

 and northern Mexico. 



26. Carex rossii Boott in Hook., Fl. Bor. Amer. 2: 222. 1839. 

 Coconino County, at the Grand Canyon (Eastwood and Howell 688) 



and on the San Francisco Peaks (M. E. Jones in 1890). Northern 

 Michigan, South Dakota to Yukon, south to Colorado, northern 

 Arizona, and California. 



27. Carex geophila Mackenz., Torrey Bot, Club Bui. 40: 546. 1913. 

 Apache County, near the New Mexico border. New Mexico and 



eastern Arizona. 



28. Carex curatorium Stacey, Leaflets West. Bot. 2: 13. 1937. 

 Known only from the type locality, Kaibab Trail to Roaring 



Springs, Grand Canyon (types Eastwood and Howell 1100, 1101, also 

 Eastwood and Howell 7073). 



29. Carex hassei L. H. Bailey, Bot. Gaz. 21: 5. 1896. 



Navajo and Coconino Counties, about 8,000 (?) feet, rare. New 

 Brunswick to Yukon, south to Pennsylvania, northern Arizona, and 

 California. 



30. Carex aurea Nutt., Gen. PL 2: 205. 1818. 



Apache and Coconino Counties, more common than C. hassei, but 

 rare in Arizona. Newfoundland to British Columbia, south to 

 Pennsylvania, New Mexico, northern Arizona, and California. 



