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



*5. Pectis coulteri Harv. and Gray in A. Gray, Amer. Acad. Arts and 

 Sci. Mem. ser. 2, 4: .62. 1849. 

 Sonora, and reported from Arizona. 



6. Pectis linifolia L., Syst. Nat. ed. 10, 1221. 1759. 



Pectis linifolia var. marginalis Fernald, Amer. Acad. Arts and 

 Sci. Proc, 33: 85. 1897. 



Cochise and Pima Counties, 3,000 to 6,000 feet, shaded canyons 

 and slopes, August and September. Southeastern Arizona to northern 

 South America; West Indies. 



7. Pectis longipes A. Gray, PL Wright. 2: 69. 1853. 



Cochise, Santa Cruz, and Pima Counties, 3,500 to 5,500 feet, 

 gravelly flats and rocky slopes, April to September, type from between 

 the San Pedro River and Santa Cruz., Sonora (Wright 1127). Western 

 Texas to southeastern Arizona and northern Mexico. 



8. Pectis filipes Harv. and Gray in A. Gray, Amer. Acad. Arts and Sci. 



Mem. ser. 2,4:62. 1849. 

 Pinal, Cochise, Santa Cruz, and Pima Counties, 3,000 to 6,000 feet, 

 sandy plains, mesas, and rocky slopes, August to October. Western 

 Texas to southern Arizona and northern Mexico. 



9. Pectis papposa Harv. and Gray in A. Gray, Amer. Acad. Arts and 



Sci. Mem. ser. 2, 4: 62. 1849. 

 Coconino, Mohave, western Graham, Maricopa, Pinal, Pima, and 

 Yuma Counties, 3,000 feet or lower, sandy-gravelly plains and mesas, 

 very common, June to October. New Mexico to California and north- 

 ern Mexico. 



10. Pectis angustifolia Torr., Ann. Lye. N. Y. 2: 214. 1828. 

 Navajo, eastern Coconino, and western Gila Counties, 3,300 to 



7,000 feet, also reported from the vicinity of Yuma, dry sandy or 

 gravelly mesas, September. Nebraska to Texas, Arizona, and 

 Mexico. 



11. Pectis palmeri S. Wats., Amer. Acad. Arts and Sci. Proc. 24: 58. 



1889. 



Pectis mearnsii Rydb., North Amer. Fl. 34: 209. 1916. 



Eastern Yavapai, southern Gila, and western Pima Counties, 2,500 

 to 3,000 feet, August, type of P. mearnsii from Fort Verde (Mearns 

 184) . Southern Arizona, Sonora, and Baja California. 



12. Pectis rusbyi Greene in A. Gray, Syn. Fl. I 2 : 361. 1884. 

 Yavapai County, about 4,000 feet, August and September, type 



from Beaver Creek (Rusby in 1883). Known only from central 

 Arizona. 



106. ANTHEMIS. Camomile 



Branching annual, thinly pilose, rank-scented; leaves alternate, 

 bi- or tripinnatisect into narrowly linear, cuspidate-tipped divisions; 

 heads medium-sized, solitary at the tips of the stem and branches, 

 naked-peduncled, the rays 10 to 15, white, the disk yellow; involucre 

 hemispheric, of lance-ovate or oblong, scarious-margined phyllaries; 

 receptacle conic, naked toward the base, bearing stiff narrow acuminate 

 pales above; achenes subcylindric, 10-ribbed, glandular-roughened; 

 pappus none. 





