292 PROCEEDINGS OF THE AMERICAN ACADEMY. 
leaves opposite, linear to lanceolate, base narrowing somewhat above the 
expanded often connate portion, rarely denticulate, 2.5 cm. to 7.5 cm. 
long, .3 em. to 1.25 em. wide: inflorescence irregular in form; glomerules 
fairly compact, subtending a whorl of leaves which are usually broad and 
- conspicuous : involucral bracts subequal ; head 10- to 13-flowered, sessile, 
the ray flower has a large oval ligule equalling in length the slender 
corolla tube: achenes of 9 and of % about equal, that of the 9 usually 
stouter: most nearly allied to F. linearis, Lag., from which it differs 
mainly in the number of flowers in a head, in possessing a whorl of 
leaves about the glomerules, and in habit; and to #. longifolia, Gray, 
from which it differs in the possession of ligulate flowers, and the whorl 
of leaves about the glomerule, and in habit. — FLoripa: Sonibel Is., 
H. J. Webber, 175, Jan. 1896 (hb. U. S.); Manatee, J. H. Simpson, 
1889 (hb. U.S.) ; Hog Is., S. M. Tracy, 7341, Nov. 1901 (bb. Gr., hb. 
M. B. G.). 
+ + Leaves ovate, conspicuously perfoliate. 
15. F. cutorarroria, Gray. Stem glaucous, striate, 3 to 9 dm. 
high: leaves ovate-oblong to narrowly lanceolate, broadest and connate 
or connate-perfoliate at base, glabrous, 2.5 to 9 cm. long, 1.2 to 3.5 cm. 
wide: heads more or less clustered in a broad and open naked peduncu- 
Jate compound terminal corymbiform cyme: heads 11- to 13-flowered, 
involucral bracts 5, the 2 smaller and outer bracts quite distinct; ray 
flowers 0, disk flowers .6 cm. long; 2 to 3 small pales on most achenes 
(4 acc. Gray). — Gray, PI. Fendl. 88 (1849), & Syn. FI. ii. pt. 2, 353. 
— Texas: Screw Bean, G. C. Nealley, 688, 1889 (hb. U. S.); on the 
banks of the Rio Grande, Wright, 357 (hb. Gr.); below Dojiana, pe 
of Rio Grande, Parry, Bigelow, Wright, and Schott, 592 (hb. U. S.). 
Mexico: Coahuila, Palmer, 682, 1880 (hb. Gr., hb. J. D. S., hb. M. B. G., 
hb. U. S.), and 2083, 1897 (hb. Gr., hb. J. D. S., hb. M. B. G.). 
DovstFuL anp Exciupep Sprctes. 
F. numiLiima, Sch. Bip. in Linnaea, xxxiv. 529 (1865-66), with- 
out description. 
_F. spicata, Juss. mss. acc. Smith in Rees, Cyclopedia, xv. Col- 
~ lected by Dombey in Peru. Acc. to Hook. f. & Jacks., in Index 
Kewensis, it is Piqueria artemisioides. 
_F. pervvrana, Juss. acc. DC. Prod. v. 635, is Piqueria artemisioides. 
F. perFouiata, Klatt, Leopold. xxiii. 146 (1887), is Desmanthodium 
perfoliatum. 
