252 MISC. PUBLICATION 423, U. S. DEPT. OF AGRICULTURE 



43. Eriogonum wrightii Torr. ex Benth. in DC, Prodr. 14: 15. 1856. 



Eriogonum trachygonum Torr. subsp. wrightii Stokes, Gen. 

 Eriog. 58. 1936. 



Throughout the State except in the northeastern and southwestern 

 corners, 3,000 to 7,200 feet, often very abundant, June to October. 

 Colorado to Texas, Arizona, California, and northern Mexico. 



The plant affords fair browse for cattle and is, according to Nichol, 

 the most important deer-browse plant in the State. Mrs. Collom 

 reports that the flowers yield a fine, almost colorless honey. A form 

 with involucres glomerate toward the ends of the branches (these 

 more scattered in the typical form) is encountered frequently in 

 southern Arizona and has been collected on Hualpai Mountain 

 (Mohave County). It is subsp. glomerulum Stokes. 



44. Eriogonum racemosum Nutt., Acad. Nat. Sci. Phila. Jour. ser. 2, 



1: 161. 1848. 



Apache County to Hualpai Mountain (Mohave County), 5,000 to 

 9,000 feet, common in yellow pine forests, June to September. Colo- 

 rado and Utah to western Texas and Arizona. 



Redroot eriogonum. 



45. Eriogonum jonesii S. Wats., Amer. Acad. Arts and Sci. Proc. 21: 



454. 1886. 



Eriogonum lanosum Eastw., Calif. Acad. Sci. Proc. ser. 4, 20: 

 140. 1931. 



Coconino County and near Peach Springs (Mohave County), 

 4,500 to 7,000 feet, August and September, type of E. jonesii from 

 Cosnino (Coconino County), type of E. lanosum from near Canyon 

 Diablo (Coconino County). Southern Utah and northern Arizona. 



46. Eriogonum fasciculatum Benth., Linn. Soc. London Trans. 17: 



411. 1837. 



Coconino and Mohave Counties to Pima and Yuma Counties, 

 2,000 to 4,500 feet, on dry rocky slopes, March to June. Arizona to 

 Nevada and California. 



Flat-top buckwheatbrush, California-buckwheat, represented in Ari- 

 zona by var. polifolium (Benth.) Torr. and Gray (E. polifolium Benth.), 

 a xerophilous shrub up to about 1 m. (3 feet) high with involucres in 

 dense headlike clusters and whitish or pinkish, slightly fragrant flowers. 



47. Eriogonum sulcatum S. Wats., Amer. Acad. Arts and Sci. Proc. 14: 



296. 1879. 



Eriogonum heermanni Dur. and Hilg. subsp. sulcatum Stokes, 

 Gen. Eriog. 91. 1936. 



Prospect Valley, Coconino County (Goldman 2291), Pagumpa 

 Springs, Mohave County (Jones 5089p), 4,000 to 5,000 feet, Septem- 

 ber. Utah, Nevada, and Arizona. 



48. Eriogonum howellii Stokes, Gen. Eriog. 91. 1936. 



Lees Ferry and canyon of the Little Colorado River (Coconino 

 County), to Kingman (Mohave County), 2,500 to 5,500 feet, in dry 

 rocky places, August and September. Nevada, northern Arizona, and 

 eastern California. 



