240 COMPOSITE. (composite family.) 



* Stems commonly simple, dilated under the head : disk -flowers yellow : rays 20 or more. 



-t- Acltiui<l sinixilh. 



1. L. Heleniurn, Natt. Smooth or nearly so ; leaves entire or obscurely 

 serrate, lanceolate or linear, the lower ones decurrent, the lowest tapering iuto a 

 petiole ; rays 20-30 in a single row ; scales of the pappus lacerate, and mostly 

 bristle-pointed : achenia smooth. (L. decuiTcns, Ell.) — Margins of pine-baiTen 

 ponds, Florida to South Carolina, and westward. April and May. — Stem 

 l°-2° high. 



2. L. incisa, Torr. & Gray. Smooth ; leaves lanceolate, rather obtuse, 

 sessile, , not decurrent, sinuate-pinnatifid or incised; scales of the pappus lacer- 

 ate, or slightly fimbriate at the summit; rays about 40, in 2-3 rows. — Low pine 

 barrens, Georgia ami westward. — Resembles No. 4. 



-•- 4- Achenia hairy on the angles. 



3. I_j. fimbriata, Torr. & Gray. Stem smooth, sometimes branching, the 

 peduncle slightly pubescent; leaves linear-lanceolate, acute, entire or obscurely 

 serrate, decurrent; scales of the pappus fimbriate. — Low pine barrens, Florida, 

 and westward. April and May. — Stem 1°- 2° high. 



4. L. puberula, Macbride. Closely pubescent ; leaves somewhat fleshy, 

 linear-lanceolate, sessile but not decurrent, denticulate ; the lowest spatulate- 

 lanceolate, toothed or pinnatifid ; scales of the pappus obtuse, with slightly 

 lacerated margins. — Wet pine barrens, Florida to North Carolina, and west- 

 ward. April and May. — Stem 2° high. 



5. L. brevifolia, Nutt. Stem pubescent above, often sparingly branched ; 

 leaves entire, more or less decurrent, the upper ones lanceolate, the lowest spatu- 

 late-oblong, obtuse ; scales of the pappus obtuse, slightly lacerate at the apex. — 

 Wet places, Alabama to North Carolina. May and June. — Stem l°-3° high. 

 Heads large. 



* * Stems branching, leafy : heads corymlwse : rays 8-12 : flowers of the disk purple. 



6. L. brachypoda, Torr. & Gray. Stem pubescent ; leaves lanceolate, 

 entire or nearly so, decurrent ; scales of the pappus ovate, slightly denticulate, 

 abruptly awn-pointed ; achenia hairy on the angles. — River-banks, Florida to 

 North Carolina. May and June. — Stem l°-2° high. 



61. BALDWINIA, Ell. 



Hi mis many-flowered, globose in fruit; the ray-flowers 20-80, neutral, 

 8-toothed at the apex ; tube of the disk-flowers dilated and indurated. Scales of 

 the involucre short, fleshy, imbricated in about 4 rows. Receptacle deeplj alve- 

 olate; the 5-6-angled cells with entire margins, enclosing the Blender obconical 

 hair} achenia Pappus of 7 - 'J oblong nerveless chefly Bcales, as long as the 

 achenia. — An erect puberulenl mostly simple perennial herb, with alternate 



fleshy entire linear or (the lowest) spatulate leaves, ami a solitary head of yellow 



flowers on a long peduncle. 



1. B. uniflora, Ell. — Lowpine barrens, Florida t>> North Carolina, ami 

 westward. September. — Stem2°— 8° high. Reads large.— Dr. Curtis flnds 

 a form with the disk Bower* dark purple. The rays are also sometimes tabular. 



