WOOTOIST AND STANDLEY PLOEA OF NEW MEXICO. 657 



Plants not lepidote-scurfy. 



Heads all pedunculate; plants very slender 4. G. Jilifolia. 



Heads mostly or at least partly sessile; plants stouter. 

 Leaves linear, 2 to 6 cm. long. 



Plants 30 cm. high or less, woody only at 



the base; involucres campanulate. . 5. G. diversifolia. 

 Plants 50 to 100 cm. high, shrubby; in- 

 volucres elongated-turbinate 6. G. longifolia. 



Leaves linear-filiform, mostly short. 



Plants low, 15 cm. high or less, densely 

 branched; heads very numerous, 



dense; stems very slender 7. G. juncea. 



Plants more than 20 cm. high, sparingly 

 branched; heads fewer, loosely ar- 

 ranged; stems stout 8. G. tenuis. 



1. Gutierrezia sphaerocephala A. Gray, Mem. Amer. Acad. n. ser. 4: 73. 1849. 

 Type locality: ' ' Low prairie, from the Upper to the Middle spring of the Cimarron." 

 Range: New Mexico and Arkansas to Texas. 



New Mexico: Magdalena; Nara Visa; Palomas; Socorro; mesa west of Organ Moun- 

 tains; Roswell; Artesia; Dayton; Carlsbad; Lake Valley. Plains, in the Lower and 

 Upper Sonoran zones. 



2. Gutierrezia glomerella Greene, Pittonia 4: 54. 1899. 



Type locality: Organ Mountains, New Mexico. Type collected by Wooton (no. 

 449). 



Range: Colorado and New Mexico to western Texas. 



New Mexico: Tunitcha Mountains; Gallup; Magdalena; Redrock; Magdalena 

 Mountains; San Marcial; Deming; Mangas Springs; Organ Mountains; Guadalupe 

 Mountains; Florida Mountains; Carlsbad; Fort Bayard; Orogrande; Albuquerque; 

 Dayton. Dry plains and hills, in the Lower and Upper Sonoran zones. 



3. Gutierrezia furfuracea Greene, Repert. Nov. Sp. Fedde 7: 195. 1909. 



Type locality: Cactus Flat, New Mexico. Type collected by E. A. Goldman 

 (no. 15G8). 



Range: Southern New Mexico. 



New Mexico: Cactus Flat; Bishops Cap; Tortugafl Mountain; Lake Valley. Dry 

 plains and hills, in the Lower and Upper Sonoran zones, 



4. Gutierrezia filifolia Greene, Pittonia 4: 55. 1899. 



Type locality: Round Mountain, New Mexico. Type collected by Wooton in 

 1897. 



Range: Plains and foothills of New Mexico and western Texas. 



New Mexico: Santa Fe; Albert-, Nara Visa; Dog Spring; near White Water; Rincon; 

 Round Mountain; Roswell; Carlsbad. Upper Sonoran Zone. 



5. Gutierrezia diversifolia Greene, Pittonia 4: 53. 1899. 

 Type locality: Laramie, Wyoming. 



Range: Montana and Saskatchewan to Utah and New Mexico. 



N i w M i:\n '>; Tunitcha Mountains; Park View; Johnsons Mesa ; Mora ('reek; Folsom; 

 Raton; Eebron; Maxwell City. Plains and lew hills, in the Upper Sonoran and 

 Transition zones. 



6. Gutierrezia longifolia Greene, Pittonia 4: 54. L899. 



Type locality: White Mountains, New Mexico. Type collected by Wooton (no. 

 377). 

 Range: Colorado to New Mexico. 



