142 ONAGRACEH. (EVENING-PRIMROSE FAMILY.) 
9. L. capitata, Michx. Smooth; stem mostly simple, slender, angled 
above; leaves long, lanceolate, acute, sessile, the lowest ones broader and ob- 
tuse; flowers in a compact oblong or ovate head, the lower ones sometimes 
scattered ; petals minute, mostly wanting ; capsule obtusely 4-angled, somewhat 
narrower at the base, longer than the calyx-lobes.— Wet pine barrens, Florida 
to North Carolina. July and August. — Stem 29 — 3° high. 
10. L. lanceolata, Ell? Smooth; stem stout, terete, at length much 
branched; leaves lanceolate, sessile; flowers very numerous, in all the axils, 
green; petals none; capsule cubical, with the sides flat and the angles mar- 
gined, twice as long as the calyx-lobes; seeds cylindrical. — Ponds and swamps 
in the pine barrens, Florida and Georgia. July- Sept. — Stem 1°-2° high. 
Flowers small. 
11. L. alata, Ell. Smooth; stem slender, simple or sparingly branched 
near the summit, strongly angled ; leaves cuneate-lanceolate, obscurely denticu- 
late; flowers few, near the summit of the branches, white; petals none ; capsule 
cubic-obconical, with concave sides and winged angles, as long as the calyx- 
lobes ; seeds ovoid. — Brackish marshes, Florida to North Carolina, and west- 
ward. July and August. — Stem 29 — 3? high. 
12. L. microcarpa, Michx. Smooth; stem low, creeping at the base, 
3-angled, mostly simple; leaves spatulate-obovate ; petals none; capsule mi- 
nute, cubic-obconical, shorter than the calyx-lobes. — Muddy places, Florida to 
North Carolina, and westward. July and August. — Stem 6/—12/ high. Cap- 
sule scarcely larger than a pin's head. 
* * * Stems creeping: leaves opposite. 
+ Petals none. 
13. L. palustris, Ell. Smooth; stems diffuse; leaves obovate, tapering 
into a long petiole ; capsule oblong or obconical, obscurely 4-sided, longer than 
b calyx-lobes.— Ditches and muddy places, common. June- Sept. — sun 
-127 long. 
14. L. spathulata, Torr. & Gray. Pubescent and somewhat hoary; 
leaves spatulate-obovate ; capsule ovoid ; otherwise like the preceding. — Mar- 
gins of pine-barren ponds, Middle Florida. July and August. 
+ + Petals 4. 
15. L. natans, Ell. Smooth; stems diffuse; leaves obovate, acutish, ta- 
pering into a long petiole ; flowers short-pedicelled ; petals roundish, as long 2$ 
the lobes of the calyx; capsule obtusely 4-angled, narrowed at the base. — 
Marshes and margins of streams, Florida to North Carolina, and. westward. 
peT Sept. — Resembles No. 13, but is every way larger. 
16. L. arcuata, Walt. Smooth; leaves lanceolate, narrowed at the base, 
acute; flowers on peduncles usually lbs than the leaves, 2-bracted at the 
base ; calyx-lobes linear-lanceolate, shorter than the obovate petals ; capsule cla- 
yas, care ug nea ee Fiorita ws Worth Carolins, m i 
