250 MISC. PUBLICATION 42 3, U. S. DEPT. OF AGRICULTURE 



31. Eriogonum triste S. Wats., Amer. Acad. Arts and Sci. Proc. 10: 



347. 1875. 



Eriogonum alatum Torr. subsp. triste Stokes, Gen. Eriog. 20. 

 1936. 



Apache County to Coconino County, 7,000 to 8,000 feet, July to 

 September. Colorado and Utah to New Mexico and Arizona. 

 Probably not specifically distinct from E. alatum. 



32. Eriogonum jamesii Benth. in DC, Prodr. 14: 7. 1856. 

 Navajo and Gila Counties to Cochise and Pima Counties, 5,000 to 



9,000 feet, among rocks in pine woods, July to October. Kansas to 

 Colorado, south to Texas and Arizona. 



Sometimes known as antelope-sage. Easily distinguished from 

 other species of its group by the cream-colored (not bright yellow) 

 perianth. Mrs. Collom reports that the roots are used medicinally 

 by Indians. 



33. Eriogonum flavum Nutt. ex Benth., Linn. Soc. London Trans. 



17: 408. 1837. 

 Kaibab Plateau and north rim of the Grand Canyon, Coconino 

 County, 8,000 to 8,500 feet (Goodman and Hitchcock 1643, Kearney and 

 Peebles 13696), among yellow pines and in open meadows, August 

 (probably other months). Manitoba and Alberta to Colorado and 

 Arizona. 



34. Eriogonum umbellatum Torr., Ann. Lye. N. Y. 2: 241. 1828. 

 Navajo Creek, Kaibab Plateau, south rim of the Grand Canyon, 



Pagumpa Springs (Coconino and Mohave Counties), 5,000 to 9,000 

 feet, April to September. Wyoming to Washington, northern 

 Arizona, and California, 



Sulphur eriogonum or sulphurflower, names equally applicable to 

 all of these closely related showy, yellow-flowered species. 



35. Eriogonum arcuatum Greene, Pittonia 4: 319. 1901. 



Eriogonum jamesii Benth. var.flavescens S. Wats., Amer. Acad. 



Arts and Sci. Proc. 12: 255. 1877. 

 Eriogonum bakeri Greene, PL Baker. 3: 15. 1901. 

 Eriogonum jamesii var. arcuatum Stokes, Gen. Eriog. 118. 



1936. 



Hopi Indian Reservation (Navajo County), throughout Coconino 

 County, Hualpai Mountain (Mohave County), 5,200 to 8,000 feet, in 

 yellow pine forest, August and September. Colorado, Utah, New 

 Mexico, and northern Arizona. 



This species appears like a luxuriant development of E. flavum 

 Nutt. 



36. Eriogonum cognatum Greene, Pittonia 3: 201. 1897. 



Eriogonum ferrissii A. Nels., Amer. Bot. 28: 21. 1922. 

 Eriogonum umbellatum Torr. subsp. cognatum Stokes, Gen. 

 Eriog. 113. 1936. 



Navajo, Coconino, Mohave, Gila, and (probably) Yavapai Counties, 

 5,000 to" 7,500 feet, common in pine forests in Coconino County, July 

 to September, type of E. cognatum from near the San Francisco Peaks 



