1907] Hall. Compositae of Southern California. 177 



1. S. Fremont! Gray, Pacif. R. Kept. iv. 106, t. 15 (1857). 

 Plant low and spreading, much branched from the base: 



leaves broadly linear or spatulate, sometimes shallowly 3-lobed 

 near the apex, 5 to 15 mm. long : heads short-pedunculate : in- 

 volucre 5 or 6 mm. high, the bracts scarious-margined : rays 

 golden-yellow, 3 to 6 mm. long: pappus bright white, the nu- 

 merous barbellate bristles often paleaceously united at base, de- 

 ciduous. 



Abundant from Cajon Pass to the Mohave River, Parish, no. 

 1267, and Hall, no. 6179; Randsburg, Mohave Desert, C. M. 

 Drake, no. 8; Cameron, Tehachapi Pass, Brandegee- Inyo Co., 

 Purpus, Brandegee, Coville & Funston; Soda Lake, Cooper, ace. 

 to Gray ; east to Utah and Arizona. 



2. S. Lemmoni Gray, Proc. Am. Acad. xix. 20 (1883). Act- 

 inolepis Lemmoni Gray, Proc. Am. Acad. xvi. 101 (1880). Mi- 

 crobahia Lemmoni Ckll., Muhlenbergia iii. 9 (1907). 



Stem very slender, often erect, only a few cm. high : herbage 

 glabrate in age: leaves linear or slightly enlarged above, entire: 

 involucre 4 or 5 mm. high, its 6 to 8 bracts narrowly oblong and 

 scarious-margined : rays 7 or 8, fading from rose to flesh-color, 

 commonly almost white on the upper surface, deep rose and 

 with dark-red veins beneath, the margins white. 



Manzana, Antelope Valley, Davidson Cajon Pass., Parish, no. 

 1250, Hall & Chandler, no. 6756; San Bernardino Plains, Mar., 

 1880, Lemmon. 



68. HYMENOPAPPUS L'Her. 



Herbs with alternate or mostly basal pinnatifid leaves. Heads 

 medium-sized, discoid in most species, borne in an open .panicle 

 or solitary and terminal on the elongated branchlets. Involucral 

 bracts 6 to 12, in 1 or 2 series, broad, the margins scarious and 

 often colored. Corollas with narrow tube, abruptly dilated 

 throat, and spreading or recurved lobes. Achenes obpyramidal. 

 4 to 5-angled. Pappus of 10 to 20 thin obtuse or awned paleae. 

 sometimes reduced or wanting. 

 Pappus-paleae not awn-tipped: flowers yellow. 



Involucral bracts very unequal 1. H. lugens. 



Involucral bracts nearly equal 2. H. filifolius. 



Pappus-paleae awn-tipped: flowers white or purplish 3. H. Wrightii. 



