102 PROCEEDINGS OP THE AMERICAN ACADEMY. 



heads ovate, 6 to 7 mm. high, discoid : iuvohicre campanulate ; bracts of 

 the involucre about 3-seriate, lance-oblong, acutish, aj^pressed-canescent- 

 puberulent : acheues gla.brous. — Mexico. State of Morelos : lime- 

 stone hills near Jojutla, altitude 925 m., 18 October, 1902, C. G. Pringle^ 

 no, 8710 (hb. Gr.). 



The species here proposed is most nearly related to Zaiuzania dis- 

 coidea, Gray, but is readily distinguished by the smaller leaves, more 

 slender petioles; the slight puberulence is not dense and soft-canous- 

 tomentose on the lower leaf-surface. 



Aspilia (?) aggregata. Perennial: stem terete, covered with a 

 grayish bark ; ultimate branches, upwardly appressed-hispid : leaves 

 opposite, oblong-oblanceolate, 2 to 4 cm. long, 0.5 to 1 cm. broad, acute, 

 entire or inconspicuously denticulate, revolute-margined, narrowed below 

 into a subpetiolate base, tuberculate-hjspid above and on the midrib and 

 nerves beneath: heads discoid, about 1 cm. high, 0.5 cm. in diameter, 

 aggregated at the ends of long slender almost naked peduncles : involu- 

 cres cylindrico-campanulate, 8-10-flowered ; bracts of the involucre 4-5- 

 seriate, ovate, short-acuminate and acute to oblong and obtuse or rounded 

 at the apex, more or less strigo^e-hisiiid on the outer surface ; the outer 

 or lowermost bracts shorter and not unfrequently sliglitly herbaceous, 

 the inner purplish or somewhat magenta-colored, noticeably ciliate toward 

 the apex with brownish hairs : corollas glabrous ; tube slender, gradu- 

 ally ampliated above into a 5-dentate limb : achenes subterete or slightly 

 compressed laterally, constricted above and bearing a lacerate-margined 

 cup-shaped persistent pappus : mature achenes 2 to 3 mm. long, hispidu- 

 lous under a lens. — Mexico. State of Jalisco : between Balanos and 

 Guadalajara, 20 September, 1897, Dr. J. N. Rose, no. 3029 (hb. Gr., 

 and hb. U. S. Nat. Mus.) 



The plant here described has, as far as examined, constantly discoid 

 heads, and in the character of achene and pappus might be equally well 

 referred to either Wedelia or Aspilia. In habit, however, it seems to 

 approach rather more closely the latter genus, and in specific relation- 

 ship suggesting the Brazilian species Aspilia Jloribunda., Baker. 



Aspilia stenophylla. An herbaceous perennial : stems erect, 5 to 

 7 dm. high, slender much-branched, appressed-hirtellous-pubescent, in 

 the dried state reddish : leaves lanceolate or linear, 8 to 1 2 cm. long, 3 

 to 10 mm. broad, acute, entire or inconspicuously denticulate, slightly 

 revolute-margined, subsessile or narrowed at the base into a short petiole, 

 appressed-hispidulous-pubescent on both surfaces : heads about 1 cm. high, 

 including the rays 1.5 to 1.8 cm. in diameter, terminating the stems and 



