43 2 



BOTANICAL GAZETTE 



[JUNE 



J 



Gaillardia pedunculata, n. sp.— Winter annual or biennial, 2-4 dm 

 high: stems few to several from the crown of the slender tap root, 

 leafy on the lower one-fourth only, the rest being the slender mono- 

 cephalous peduncle, softly cinerous-hirsute : leaves irregularly pinnati- 

 fied to entire, oblanceolate to linear, 2-6 cm long. 



more 



slightly viscidly pubescent especially when young : involucral bracts 

 in about 2 rows, moderately whitened with flat woolly hairs, shorter 

 than the disk which is i2-i4 mm wide and high: rays 2 cm or less long, 

 clear yellow, minutely pubescent on the outside, cleft one-third their 



from summit 



ery 



slender tube: disk- flowers also yellow; limb tubular, 

 densely and minutely pubescent with beaded hairs: pappus of very 



+U;ti nqlooo oKrmt ac 1r»nrr qc thp inr>rrl inn tplv nilbf«;rP.nt Rchene. mUCll 



mos 



obtuse, and without costa or awn : fimbrillae of the receptacle nearly 

 obsolete, consisting of a few short slender teeth. 



Moapa, Nevada, April 8, 1905, Goodding 2177. 



This seems to have no near relative among described species. 



Enceliopsis, nov. gen. — Enceliopsis Gray, Proc. Am. Acad. 19:9. 

 1883, and Syn. FL 1: 283. 1894, as Section I of Helianthella.— Xero- 

 phytic plants, perennial from an indurated branching caudex, the 

 crowns of which bear the rather thick simple leaves and the single 

 long pedunculate monocephalous scape. Leaves canescent, and the 

 petioles usually margined and longer than the blade. Heads large; 



the involucral bracts in 2 or 3 series. 



Bracts of the receptacle 



chaffy, hyaline, or scarious with greenish tip, and more or less con- 

 duplicate. Rays (rarely wanting) yellow, conspicuous, pubescent 

 on the exterior, 20-40. Disk-flowers also yellow, with short narrow 

 tube, abruptly expanded into the longer cylindrical throat. Achenes 

 flat, oblong-cuneate, with narrow callous margins and the broadly 

 retuse summit with a wider crow r nlike callus, from densely to thinly 

 villous. Pappus of two subulate aw r ns and in some species a narrow 

 fringe of confluent squamellae between them; rarely even the awns 

 wanting. — Plants peculiar to the "limestone clays" of the desert 

 Southwest (southern Utah and Nevada, and adjacent Colorado, 

 New Mexico, and Arizona). 



