316 ORDER L. — ONAGRACFLE. 



3. L. virga'ta, (Mich.) Stem erect, virgate, slightly angled, pubes- 

 cent, sometimes branched. Leaves ovate or oblong, the upper linear, 

 obtuse, sessile, pubescent Floieers axillary, large, on slender pedicels; 

 lobes of the calyx ovate, reflexed. Petals larger than the segments. 

 Capsule cubical, with winged angle?. — Yellow. 2f. May — Sept. In 

 dry places. 2 — 4 feet. 



4. L. linearis, (Walt.) Stem erect, branching, slender, glabrous, an- 

 gled near the summit. Leaves linear, acute at each end. Flowers ax- 

 illary, solitary, sessile ; segments of the calyx triangular, ovate. Petals 

 oblong-ovate, sometimes wanting. — Pale yellow. If July — Sept. In 

 shallow water. 10 — 20 iuches. 



5. L. limko'lia, (Poir.) Stem erect, glabrous, branching from the 

 base, slender, angled above. Leaves linear, tapering at the base. Flow- 

 ers axillary, sessile, larger than the preceding ; lobes of the calyx ovate- 

 lanceolate. Capsule cylindrical, slender. — Yellow. If. July — Aug. 

 Middle Geo. 6—18 inches. 



6. L. cylin'drica, (Ell.) Stem erect, branching, slightly angled, gla 

 brous. Leaves slightly denticulate, lanceolate, tapering at each extrem- 

 ity, slightly decurrent. Flowers small, solitary or clustered, apetalous, 

 sessile; segments of the calyx short, serrulate. Capsule cylindrical, 

 pubescent, with 4 furrows. — Yellow. 2f . July — Sept. Southern Geo. 

 2—3 feet. 



7. L. mollis, (Mich.) Stem erect, much branched, pubescent. Leaves 

 lanceolate, pubescent, acute at each extremity. Flowers generally clus- 

 tered, axillary, sessile ; segments of the calyx acuminate, triangular, 

 ovate. Petals minute or none. Capsule subglobose, villous, 4-sided. — 

 Yellow. 2f. July — Sept. In swamps. 2 — 3 feet. L. pilosa, Walt. 



8. L. ala'ta, (Ell.) Stem erect, glabrous, sparingly branched, winged. 

 Leaves cuneate, decurrent at the base ; lower ones lanceolate or oval. 

 Flowers axillary, solitary, sessile, apetalous ; segments of the calyx 

 broad, triangular, ovate. Capstdcs cubical, slightly winged, small. — 

 Yellow. 21. July — Sept. In swamps. Southern Car. and Geo. 1 

 —3 feet. 



9. L. sph^rocar'pa, (Ell.) Stem erect, slightly angled, branching, 

 glabrous or minutely pubescent. Leaves linear-lanceolate, acute, atten- 

 uate at the base. Flowers axillary, generally solitary, sessile, commonly 

 apetalous ; segments of the calyx triangular-ovate. Capsule small, glo- 

 bose, pubescent. — Yellow. If. July — Sept. Swampy grounds. South- 

 ern Oar. and Geo. 1 — 2 feet. 



10. L. microcar'i'A, (Mich.) Stem decumbent, slightly winged, branch- 

 ing, glabrous, ascending. Leaves obovate, spatulate, acute, glabrous, 

 obscurely denticulate. Flowers minute, axillary, sessile, apetalous. 

 Capsule very small, -1-furrowed. — (■';.< . Damp places. Lower Car. and 

 Ceo. 8 — 12 inches. 



11. L. capita'ta, (Mich.) Stem erect, glabrous, slender, somewhat 

 angled. Leaves narrow lanceolate, obtuse at the base, sessile, acute. 

 Flowers in a crowded, terminal bead or spike, sessile. Petals small or 

 none; segments ol the calyx broad, triangular-ovate. Capsule oblong, 

 quadrangular, slightly winged. — Yellow. Zf. Aug. — Oct. Damp 

 soils. Middle Geo. 12 — 16 inches. 



12. L. palus'tris, (Ell) Stem procumbent, glabrous, creeping, branch- 

 ing, succulent. Leaves opposite, ovate-fipatulate, entire, tapering at the 



