142 ONAGRACE^. (EVENING-PRIMKOSE 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 2° - 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 l°-2° high. 

 Flowers small. 



11. L. alata. Ell. Smooth; stem slender, simple or sparingly branched 

 near the siimmit, 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 2° - 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. 

 -1— Petals none. 



13. L. palustris. Ell. Smooth ; stems diff"use ; leaves obovate, tapering 

 into a long petiole ; capsule oblong or obconical, obscurely 4-sided, longer than 

 the calvx-lobes. — Ditches and muddy places, common. June- Sept. — Stems 

 6' -12' long. 



14. L. spathulata, Torr. & Gray. Pubescent and somewhat hoary ; 

 leaves spatuhitc-obovatc ; capsule ovoid; otherwise like the preceding. — Mar- 

 gins of pine-barren ponds. Middle Florida. July and August. 



4- -1- Petals 4. 



1.5. L. natans, Ell. Smooth; stems diffuse; leaves obovate, acntish, ta- 

 pering into a long petiole ; flowers short-pedicelled ; petals roundish, as long as 

 the lobes of the calyx ; capsule obtusely 4-angled, narrowed at the base. — 

 Marshes and margins of streams, Florida to North Carolina, and westward. 

 July- 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 longer than the leaves, 2-bracted at the 

 base ; calyx-lobes linear-lanceolate, shorter than the obovate petals ; capsule cla- 

 vatc, curved. — Muddy margins of ponds, &c,, Florida to North Caioliua. July. 

 — Stems 4' - 8' long. 



