100 
c; 
small, entire, 
lobes. 
ovate, cuspidate-tipped: fruit with small ovate calyx- 
A West Indian species, found in dry fields in Florida by Michaux, and 
not collected since. Said by Pursh to occur in Georgia and Florida. 
17. E. Hookeri Walp. Rep. ii. 389. Stem erect, branch- 
ing above, a foot or two high: radical leaves petioled, somewhat 
dentate; lower stem leaves almost sessile, lanceolate, laciniately- 
toothed and spiniilose, with a pair of small laciniate segments at 
base; upper leaves palmately 5 to 7-parted, with narrow pinnatifid- 
laciniate spinose-tipped segments: heads ovate-oblong (4 to 6 lines 
long), with involucre of numerous narrov/ly lanceolate spiny- 
toothed bracts longer than the head : bractlets lanceolate, entire, 
spiny at tip, the terminal ones leafy and crowning the head: fruit 
scaly, half a line long, with ovate spiny-tipped calyx-lobes, and 
short styles. — E. coronatum Torr. & Gray, FI. i. 604. 
Low grounds, Texas, on the Brazos (Drummond, Lindheimer, Wright), 
Matagorda county {R. G. Bechdolt), near Houston (Joor), and near Dal- 
las (Reverchon). 
18. E. Leavenworthii Torr. & Gray, FI. i. 604. Stout, 1 
to 3 feet high, branching above: lowest stem leaves broadly oblan- 
ceolate, spinosely-toothed, gradually becoming more or less pal- 
mately parted above to the ordinarv stem-leaves, which are sessile 
and deeply palmately-parted into narrow incisely-pinnatifid spread- 
ing pungent segments: heads pedunculate, ovate-oblong (1 to 
inches long), with involucre of incisely-pinnatifid spinose bracts 
about as long as the head ; bractlets narrow, 3 to 7-cuspidate , the 
terminal ones veiy prominent, resembling the bracts, and crown- 
ing the head: fruit a line long, with oblong pinnatifid 3 to 5-cus- 
pidate calyx-lobes, more than twice as long as the fruit, and short 
rigid styles: oil-tubes large, 3 dorsal and 2 commissural: seed flat- 
tened laterally. 
Dry soil, Kansas {Hall), Arkansas (Nuftall, Leavenworth), and Texas 
(Drummond, Lindheimer, Wright, Thurher, Reverchon). 
Nuttall’s plant, from “Plains of the Bed Eiver,” and described as E. 
heterophylhim, is this species. 
19. E. W^rightii Gray, PI. Wright, i. 78. Glaucous: stem 
late, pectiiiate-dcntatc or pinnatifid with triangular teeth tipped 
