40 PROCEEDINGS OF THE AMERICAN ACADEMY. 



lanceolate to oblong-obovate, 2 to 5 cm, long, 0.5 to 2 cm. broad, acute, 

 dentate to subentire, green above, slightly paler beneath : heads 10 to 12 

 mm. high, including the rays 3 to 4 cm. in diameter, terminating the stem 

 and branches on long mostly naked peduncles : involucre narrowly cam- 

 panulate, 2-3-seriate ; the outer involucral bracts herbaceous, lanceolate, 

 acute, usually exceeding the inner; the inner bracts of the involucre 

 oblong, ciliate, often purplish : ray-flowers commonly 6, neutral ; rays, 

 including the short tube, 12 to 18 ram. long, 5 to 9 mm. broad, dark 

 purple : disk-flowers about 20 ; pappus lacerate-coroniform with an 

 occasional short awn on the inner angle oftheachene, persistent: mature 

 achenes slightly obovate, 3 to 4 mm. long, hirsute-pubescent with 

 upwardly subappressed hairs. — Mexico. State of Chiapas : Valley of 

 Jiquipilas, altitude 650 to 850 m., 16 to 18 August, 1895, E. W. Nelson^ 

 no. 2924 (hb. Gr., and hb. U. S. Nat. Mus.). 



Aspilia xylopoda, n. sp. An herbaceous perennial : stems several 

 from a stout ligneous base, erect, 4 dm. or more high, simple below, 

 branched above, hirsute-hispid with spreading hairs intermixed with a 

 hirtellous puberulenee, green and striate, purplish above : leaves opposite, 

 lanceolate to lance-oblong, 3 to 8 cm. long, 0.8 to 2.5 cm. broad, acute, 

 entire or remotely denticulate, uarrGwed at the base into a short petiole, 

 tuberculate-hispid above, hirsute-pubescent beneath : heads 10 to 12 mm. 

 high, including the rays 1.5 to 2 cm. in diameter: involucre 2-seriate ; 

 outer bracts of the involucre herbaceous, lanceolate, 12 mm. in length, 

 acute, pubescent on both surfaces; inner involucral bracts oblong, 

 slightly shorter than the outer, obtusish, externally pubescent, long- 

 ciliate, purplish : ray-flowers 8, neutral ; rays purple : disk-flowers 20 to 30 : 

 pappus a short lacerated crown of united scales : immature achenes 

 pubescent. — Mexico. State of Durango : 13 August, 1897, Dr. J. N. 

 Rose, no. 2260 (hb. Gr., and hb. U. S. Xat. Mus.) ; also same 

 locality and date, Dr. J. N. Rose, no. 2245 in part (hb. Gr., and hb. 

 U. S. Nat. Mus.). 



The species here proposed is related to Aspilia purpurea, Greenman, 

 from which, however, it is readily separated by the longer leaves, and the 

 spreading pubescence on the stem. 



Viguiera morelensis, n. sp. Stem erect, branched above, upwardly 

 appressed hii'sute-hispid, also finely puberulent, reddish-brown : leaves 

 alternate, lanceolate, 3 to 7 cm. long, 1 to 2.5 cm. broad, acuminate, 

 acute, dentate to subentire, revolute-margined, narrowed below into a 

 subpetiolate base, 3-nerved, appressed-hirsute and somewhat rugose 

 above, hirsute-pubescent beneath especially on the conspicuously 



