COMPOSITE. (COMPOSITE FAMILY.) 233 



entire ; heads rather large, 9 -1 2-floweredj forming a narrow com pound raceme 

 at the summit of the stem aud brandies ; rays mostly wanting ; scales of the 

 involucre oblong, obtuse ; acheuia pubescent. Dry pine barrens, Middle 

 Florida. Oct. Stem -2 high. 



4 - Lowest leaves cordate, on lung petioles: heads in simple or compound 

 racemes, 8 10-Jimcercd : pappus rigid, equalling or shorter than the hairy 

 ackenia. 



36. S. amplexicaulis, Torr. & Gray. Pubescent and roughish ; stem 

 slender, sparingly branched above; lca\cs sharply serrate, acute, the lowest 

 broadly cordate; those of the stem ovate, abruptly contracted into a broadly 

 winged and clasping petiole, the uppermost small sessile, and entire ; racemes 

 slender, often simple; rays 1 -3 ; pappus as long as the acheuium. Dry 

 open woods. Oct. Stem 2 -a 3 high. 



37. S. COrdclta, Short. Pubescent ; stem sparingly branched above ; 

 leaves acute, on wingless petioles ; the lowest large, coarsely serrate, cordate, 

 the others ovate, sharply serrate, on short petioles ; the uppermost entire, ses- 

 sile; racemes compound, terminating the spreading branches, composed of 

 crowded cluster-like racemes ; the lower ones scattered ; scales of the 8-10- 

 flowered involucre rigid, obtuse ; rays 5-6; pappus much shorter than the 

 adienium. (Brachychajta, Trr.,y Gray.) Mountains of Georgia and North 

 Carolina. Sept. Stem 2- 3 high. Lowest leaves 3' - 5' wide. 



5 -t- Leaves nearly sessile, more or less /i/uinl;/ 3-ribbed : panicles recurved. 



38. S. MisSOUriensis, Nutt. Glabrous; stem simple, rigid, l-2 

 high; leaves rather rigid, lanceolate, sharply serrate above the middle, the 

 lowest tapering into a petiole, the upper linear, entire ; panicle short, dense ; 

 heads 16 - 20-flowered ; rays 8 -12; achenia slightly pubescent. Dry soil, 

 Tennessee, and westward. July. 



39. S. Gattingeri, Chapm. Low (1 high), simple, glabrous; lower 

 leaves lanceolate, rather obtuse, tapering into a petiole, entire, or obscure! y 

 denticulate near the apex, the uppermost (V or less long) passing into the 

 oblong-linear obtuse bracts of the widely spreading flat panicle ; heads ovoid ; 

 16 -20-flowered, the oblong scales obtuse; rays few, notched ; pappus coarse, 

 shorter than the flowers ; ovary smooth. Rocky barrens of Tennessee 

 ( Gattinger). 



40. S. nemoralis, Ait. Plant grayish, minutely pubescent and rough- 

 ened ; stem mostly simple ; leaves obscurely 3-ribbed ; the lowest spatulate- 

 oblong or lanceolate, serrate ; the upper lanceolate, acute, narrowed toward 

 the base, mostly entire ; panicle dense, oblong or pyramidal, recurved ; heads 

 10- 1 2-flowered ; rays 6-7; achenia hairy. Old fields and open woods, 

 common. Stem 1 - 2 high. 



41. S. Leavenworthii, Torr. & Gray. Stem simple, minutely pubes- 

 cent and roughish ; leaves very numerous, smooth, linear-lanceolate, entire ; 

 the lowest sparingly serrate ; panicle pyramidal ; heads rather large ; rays 

 10- 12 ; achenia pubescent. Damp soil, Florida to South Carolina. Oct. 

 Stem 2 - 3 high. Leaves 2' - 3' long, 3" - 4" wide, faintly ribbed. 



