!()(» 



small, entile, (>\ ate, cuspidate-tipped: fruit with small ovate cahx- 

 lohes. 



A West Indian speeies, I'ound in dry fK-ld.s in Florida by Micliaux. and 

 not (ollofted since. Said by Pursli to occur in Georgia and Florida. 



17. E. Hookeri Vv'alp. Rep. 11. 88*J. Stem erect, branch- 

 ing ab()\e', a foot or two high: radical leaves petioled, somewhat 

 dentate; lov/er stem leaves almost sessile, lanceolate, laciniatelv- 

 toothcd and spinulose, with a pair of small laciniate segments at 

 base; npper leaves palmately 5 to 7-parted, with narrow i^innatifid- 

 laciniate spinose-tipped segments: heads ovate-oblong (4 to G lines 

 long), with involucre of numerous narrov/h- 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 Ihie long, with ovate spiny-tipped calyx-lobes, and 

 short styles. — E. coronatnm Torr. & Gray, Fl. i. 604. 



Low grounds, Texas, on the Brazos {Drninmond, Lhulheimcr, Wright). 

 Matagorda county (7? f/. Bechdolt), near Houston {Joor). and neat Dal- 

 las {Revprchoii). 



IS. E. Leavenworthii Torr. cK: Gray, Fl. i. 004. Stout, 1 

 to 8 feet high, branching above: lowest stem leaves broadly oblan- 

 ceolate, spinosely-toothed, gradually becoming more or less pal- 

 mately parted above to the ordinary stem-leavers which are sessile 

 and deeply palmately-parted into narrow incisely-pinnatifid spread- 

 ing pungent segments: heads pedunculate, ovate-oblong (1 to lj4 

 inches long ), with involucre of incisely-pinnatifid spinose bracts 

 about as long as the head; bractlets narrow, 3 to 7-cuspidate, the 

 terminal ones very prominent, resembling the bracts, and crown- 

 ing the head: fruit a line long, with oblong pinnatifid 3 to o-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 (//«//), Arkansas {Nulhiil, Lea venirortfi), and Texas 

 [Drummond, Lhulheimcr, Wright, Thurher, Reverchon\. 



Nuttali's plant, from "Plains of the Red River," and described as Zt. 

 htl<r<t}tln;}ln)h. is this species. 



ly. E. Wrightii Gray, PI. Wright, i. 78. Glaucous: stem 

 erect, branching, 1 or 2 feet high: leaves rigid; radical oblanceo- 

 latc, pectinate-dentate or pimiatifld with triangular teeth tipped 



