COMPOSITJ. (COMPOSITE FAMILY.) 213 
flowered involucre linear, obtuse; rays 5-7; achenia minutely pubescent. 
- (S. elliptica? Ell) — Damp soil near the coast, Georgia to North Carolina. 
Sept. — Stem 39 - 6? high. Leaves very numerous, 2! - 3' long. 
30. S. pilosa, Walt. Stem hirsute, simple, or branching above; leaves 
very numerous, oblong-lanceolate, slightly serrate, mucronate, rough above, pu- 
bescent on the veins beneath ; racemes numerous, slender, forming a pyramidal 
or somewhat corymbose panicle; heads narrow, 12 — 15-flowered ; rays 7-10, 
small; scales of the involucre linear; achenia slightly pubescent. (S. pyrami- 
data, Pursh. S. villosa, Ell.) — Low ground, Florida, and northward. Sept. 
and Oct.— Stem 29 - 8? high. Leaves 2! —3! long. 
31. S. odora, Ait. Stem mostly simple, pubescent in lines ; leaves entire, 
varying from linear-lanceolate to oblong-ovate, smooth on both surfaces, rough 
on the margins, punctate with pellucid dots, often reflexed ; panicle pyramidal, 
mostly one-sided ; heads 5—7-flowered ; rays about 3, showy ; achenia hairy. 
' (S. retrorsa, Michx.) — Dry soil, Florida and northward. Oct. — Stem 2°- 39 
high. Leaves 1! —2/ long. — Plant anise-scented. 
32. S. tortifolia, Ell. Stem straight, simple or branched, rough-pubescent 
above; leaves small, linear, entire, or the lowest slightly serrate, often twisted, 
pubescent on the margins and midrib ; panicle dense, pyramidal; heads small, 
6-9-flowered ; rays 3-4; scales of the involucre linear, obtuse ; achenia slightly 
pubescent. — Dry sandy soil, Florida to North Carolina. Sept. — Stem 29-39 
high. Leaves very numerous, 1/—2/ long. _ i 
33. S. brachyphylla, Chapm. Stem slender, pubescent, sparingly 
branched ; leaves smooth or pubescent on the veins, finely serrate, the lowest 
spatulate, the upper oval or orbicular; racemes short, forming a compound ra- 
ceme toward the end of the spreading branches; scales of the 3—5-flowered 
involucre rigid, obtuse; rays none; achenia pubescent, as long as the rigid 
pappus. — Dry light soil; Georgia, Florida, and westward. Sept. — Stem 29-39 
high. Leaves 1/-2! long. 
+ + + + Lowest leaves cordate, on long petioles: heads in simple or compound ra- 
cemes, 8 — 10-/lowered : pappus rigid, equalling or shorter than the hairy achenia. 
34. S. amplexicaulis, Torr. & Gray. Pubescent and roughish ; stem 
slender, sparingly branched above; leaves 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 
, often simple; rays 1-3; pappus as long as the achenium.— Dry 
open woods, West Florida, and westward. Oct. — Stem 29-3? high. 
_ 35. S. cordata, 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, sessile; racemes - 
Compound, terminating the spreading branches, composed of crowded cluster- ee 
ike racemos; the lower ones scattered ; scales of the 8-10-flowered involuero — 
obtuse; rays 5-6; pappus much shorter than the achenium. -(Braehy- 
Torr. § Gray.) — Mountains of Georgia and North Carolin: 
ee Lowest leaves 3! -5! wide: 
