102 PROCEEDINGS OF THE AMERICAN ACADEMY. 
heads ovate, 6 to 7 mm. high, discoid: involucre campanulate ; bracts of 
the involucre about 3-seriate, lance-oblong, acutish, appressed-canescent- 
puberulent: achenes glabrous. —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 Zaluzania 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 4cm. long, 0.5 to 1 cm. broad, acute, 
entire or inconspicuously denticulate, revolute-margined, narrowed below 
into a subpetiolate base, tuberculate-hispid 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- 
eres 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 strigose-hispid on the outer surface ; the outer 
or lowermost bracts shorter and not unfrequently slightly 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 Balafios and 
Guadalajara, 20 September, 1897, Dr. J. NV. 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 floribunda, 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 12 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, 
a on both surfaces: heads about 1 cm. high, 
the rays 1.5 to 1.8 em. in es terminating the stems and 
