240 COMPOSITÆ. (COMPOSITE FAMILY.) 
* Stems commonly simple, dilated under the head: disk-flowers yellow: rays 20 or more. 
+ Achenia smooth. ; V 
1. L. Helenium, Nutt. Smooth or nearly so; leaves entire or obscurely — — 
serrate, lanceolate or linear, the lower ones decurrent, the lowest tapering into & 
petiole ; rays 20 —30 in a single row ; scales of the pappus lacerate, and mostly — 
bristle-pointed ; achenia smooth. (L. decurrens, Ell.) — Margins of pine-barren 
ponds, Florida to South Carolina, and westward. April and May. — Stem 
19- 29 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 and westward. — Resembles No. 4. 
+ +  Achenia hairy on the angles. 
3. L. fimbriata, Torr. & Gray. Stem smooth, sometimes branching, the 
peduncle slightly pubescent; leaves lincar-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 ue 
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 spati- 
late-oblong, obtuse ; scales of the pappus obtuse, slightly lacerate at the apex-7 
Wet places, Alabama to North Carolina. May and June. — Stem 19-3? high. 
Heads large. © " 
* * Stems branching, leafy : heads corymbose: 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 dentieulate, 
abruptly awn-pointed ; achenia hairy on the anglés. — River-banks, Florida f? 
North Carolina. May and June. — Stem 1°-2° high. 
61. BALDWINIA, Ell. 
Heads many-flowered, globose in fruit; the ray-flowers 20-30, sn 
3-toothed at the apex ; tube of the disk-flowers dilated and indurated. Seales 
the involucre short, fleshy, imbricated in about 4 rows. Receptacle deeply ar 
_olate; the 5— 6-angled cells with entire margins, enclosing the slender obcon! 
hairy achenia. Pappus of 7-9 oblong nerveless chaffy scales, as long a5 th? 
achenia.— An erect puberulent mostly simple perennial herb, with alternate 
fleshy entire linear or (the lowest) spatulate leaves, and a solitaty head of yellow 
flowers on a long peduncle. 1 RES 
l. B. » Eil.— Low pine barrens, Florida to North Carolina ! 
