1907] Hall. Compositae of Southern California. 91 



cinereous with a harsh spreading pubescence : leaves rarely over 

 2.5 cm. long, narrowly spatulate or linear, obtuse or barely acute : 

 involucre glabrous or granulose-glandular to cinereous, never 

 with appressed hairs, the bracts acute: rays mostly 10 to 20, 

 violet, 6 to 8 mm. long: pappus essentially simple. 



Arid portion of the Sierra Nevada Mts. ; Hesperia, Mohave 

 Desert, Parish, no. 3603. Mr. Parish's plant is doubtfully of 

 this species, differing from the typical form mainly in the 

 spreading pubescence of the involucre. More material is needed. 



8. E. foliosus Nutt, Trans. Am. Philos. Soc. ser. 2, vii. 309 

 (1841). 



Three to 6 dm. high : stems many, from an herbaceous peren- 

 nial base, erect, simple up to the open cymose inflorescence: 

 herbage roughened with short rigid pustulate incurved hairs, es- 

 pecially on the leaves, or nearly glabrous: leaves rigid, very 

 fragile when dry, linear, 1.5 to 4 cm. long, 2 to 4 or 6 mm. wide, 

 only the upper ones reduced: involucre strigose-pubescent : rays 

 about 30 to 40, violet or purple, 6 to 8 mm. long: achenes linear- 

 oblong, the margins thickened, pubescent with spreading setiform 

 hairs : pappus apparently simple but usually with a few short 

 inconspicuous outer bristles. 



Common on hills and in the mountains up to 2100 m. alt. 

 throughout California. 



Var. stenophyllus (Nutt.) Gray, Bot. Calif, i. 330 (1876). 

 E. stenophyllus Nutt., PI. Gamb. 176 (1848). E. tenuissimus 

 Greene, Pitt. iii. 25 (1896) ? E. Nuttallii Heller, Bull. Torr. 

 Club xxv. 628 (1898). E. fragilis Greene, Bull. So. Calif. Acad. 

 i. 39 (1902). Differs from the species only in its leaves which 

 are 2 mm. or less wide, often filiform. A common form, es- 

 pecially in dry exposed places. 



Var. tenuissimus Gray, Syn. Fl. i. pt. 2, 215 (1884). E. 

 tenuissimus Greene, Pitt. iii. 25 1896? Slender, small-leaved: 

 leaves nearly all filiform, erect or ascending, the longest only 2.5 

 cm. long ; upper ones gradually shorter, becoming setaceous-sub- 

 ulate: heads much smaller. Along the Mexican border; the type 

 of E. tenuissimus Greene from Ventura Co. 



Var. Blochmanae (Greene) Hall, comb. nov. E. Blochmanae 

 Greene, Pitt. iii. 25 (1896). Stout: herbage canescent with a 



