48 University of California Publications in Botany. [VOL. 3 



12. STENOTUS Nutt. 



Suffruticose or shrubby evergreen plants with narrow entire 

 leaves. Herbage glabrous, resinous-punctate. Heads large and 

 broad, terminating the branchlets. Involucre hemispheric, its 

 bracts little imbricated (in 2 or 3 series), membranous, with 

 scarious margins. Flowers yellow; rays several to many; disk- 

 flowers numerous. Achenes oblong, somewhat compressed, 

 densely villous. Pappus of slender bristles, permanently white. 



1. S. linearifolius (DC.) T. & G, Fl. ii. 238 (1842). Haplo- 

 pappus linearifolius DC., Prodr. v. 347 (1836). 



Shrub 6 to 15 dm. high (sometimes depauperate), with resin- 

 ous herbage and stout woody branches : branchlets more or less 

 fastigiate, leafy below, terminating in simple nearly naked pe- 

 duncles : leaves much crowded, linear, acute, narrowed toward 

 the base, 2 to 4 cm. long, 1 to 2 mm. wide: involucre 10 to 13 

 mm. high; its bracts oblong, acuminate, greenish, the inner ones 

 with broad scarious fimbriolate margins: rays 13 to 18, oblong- 

 bnceolate, 1 to 2 cm. long: achenes white-silky: pappus white, 

 soft, deciduous. 



Zapato Chino, Lower California, Brandegee; common at a 

 /few places along the cismontane (western) base of the San Ja- 

 cinto and San Bernardino Mts. at about 900 m. alt. ; reappearing 

 on Mono Creek, Santa Barbara Co., where rare; again common in 

 the Mt. Diablo Range of middle California; to be looked for at 

 intermediate stations. 



Var. interior (Coville) Hall, comb. nov. Haplopappus in- 

 terior Coville, Proc. Biol. Soc. Wash. vii. 65 (1892). H. lineari- 

 folius interior, M. E. Jones, Proc. Calif. Acad. ser. 2, v. 697 

 (1895). Leaves shorter, commonly 1 or 2 cm. long: bracts of 

 the peduncle commonly linear-subulate: heads not so large, the 

 rays .5 to 1 cm. long : involucre 8 to 10 mm. high, its bracts some- 

 times only acute. A form inhabiting arid places, especially 

 within the Desert Area: Darwin Mesa, Inyo Co., Coville & Fun- 

 ston, no. 794 (duplicate-type of A. interior) ; Providence Mts., 

 Brandegee; eastern slope of Greenhorn Mts., Kern Co. Hall & 

 Babcock, no. 5088 ; Mt. Pinos, Ventura Co., Hall, no. 6498 ; com- 

 mon in Antelope Valley from Mohave, etc., to north slope Cajon 



