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



Upper Sonoran Zone, in meadows and other moist places: 

 near San Bernardino, Oct., 1895, at altitudes of 305 to 450 m., 

 Parish, no. 3818 (type number of A. ensatus) Julian, San Diego 

 Co., at an altitude of 1280 m., Dunn; Falls of San Diego River. 

 Brandegee ; Cienega, near Los Angeles, ace. to Davidson. 



10. A. Fremont! Parishii Gray, Syn. Fl. i. pt. 2, 192 (1884). 



Stems slender, sometimes simple and ending in a solitary 

 head, more commonly terminating in a short cymose panicle, the 

 plant seldom over 3 dm. high: herbage more or less pubescent, 

 especially in the inflorescence: radical leaves lanceolate to ob- 

 ovate, tapering to a distinct margined petiole which is widened 

 at base: upper leaves linear to narrowly oblong, sessile, 4 to 8 

 cm. long: involucre 5 to 8 mm. high, its bracts ciliolate, other- 

 wise glabrous or sparsely pubescent : rays numerous, about 6 mm. 

 long, blue fading to violet. 



Occasional in meadows, etc. of the Transition Zone, San Ber- 

 nardino and San Jacinto Mts. ; San Gabriel Mts., according to 

 Davidson. A. adscendens of McClatchie's list is probably the 

 same. 



The involucral bracts vary from spatulate, obtuse, and 

 closely imbricated to linear or oblong, acute, and nearly equal 

 in length. Both forms of involucre occur on different plants 

 from a single locality as also do intermediate forms. 



11. A. delectabilis Hall, sp. nov. 



Plant 15 to 40 cm. high, with slender perennial rootstocks: 

 stems slender, erect, simple up to the inflorescence, reddish- 

 tinged, glabrous below, minutely pubescent above with soft 

 white hairs, leafy throughout : leaves thin, entire or rarely with 

 a few obscure teeth, glabrous except on the margins which are 

 minutely ciliate-scabrous, especially below ; basal leaves narrowly 

 oblanceolate, obtuse or acute at apex, tapering below to a petiole- 

 like portion the closely sessile base of which is somewhat ex- 

 panded and sheathing, entire leaf 12 to 24 cm. long, 15 to 18 mm. 

 wide; upper leaves similar but narrower and always acute, the 

 basal portion less sheathing: peduncles short, their small bracts 

 acuminate from a broad base : heads commonly only one or two : 

 involucre 8 to 10 mm. high, about 15 mm. broad, either sub- 



