240 co.MPosiT.i:. (coMrosiTi-: iamm.v.) 



* Stents commoiihi aim jili, dilated uiulir (lie httid : disk-Jlowers yellow : rui/s 20 or 7iiore. 



■t- Arlimiu sinuolli. 

 1- L. Hcleuium, Nutt. Smooth or luarly so; leaves entire or obseiirely 

 serrate, lanceolate or linear, the lower ones decurrent, the lowest tajierinjj into a 

 petiole ; rays 20-30 in a single row ; seales of tlic jiappns lacerate, and mostly 

 bristle-pointed ; achenia smooth. (L. dcciurens, ICII.) — Mar^'ins of pinc-barrcn 

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

 10-2° high. 



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

 sessile, not deciirrent, sinnate-i)innatilid or inci.sed ; scales of tlie-pnppns lacer- 

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

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



+- -t- Achenia hairij on the angles. 



3. L. fimbriata, Ton-. & Gray. Stem smooth, sometimes branching, the 

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

 serrate, decurrent ; scales of the pajjpus fimbriate. — Low i)inc barrens, Florida, 

 and westward. April and May. — Stem l°-2° liigh. 



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

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

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

 lacerated margins. — Wet j)ine 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- 

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

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

 Heads large. 



* * Stents hr<nirhl)tfi Jeafy : heads coripnhose : rays 8-12 : Jlourrs of the disk purple. 



6. L. brachypoda, Ton-. & Gray. Stem jjubescent ; leaves lanceolate, 

 entire or nearly so, decurrent ; scales of the pa])pus ovate, slightly denticulate, 

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

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



61. BALDWINIA, Ell. 



Heads many-flowered, globose in fruit ; the ray-flowers 20 - 30, neutral, 

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

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

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

 hairy achenia. Pappus of 7 - 9 oblong ner\'eless chaffy scales, as long as the 

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

 fleshy entire linear or (the lowest) spatulatc leaves, and a solitary head of yellow 

 flowers on a long peduncle. 



1. B. uniflora, Ell. — Low pine barrens, Florida to North Carolina, and 

 westward. September. — Stem 2° -3° high. Heads large. — Dr. Curtis finds 

 a form with the disk-flowers dark-purple. The rays are also sometimes tubular. 



