ORDER CII. POLYGONACK.E. 4^9 



sunimit. Flowers usually solitary, alternate, email, on Aun-i p.-dioel^. 

 Perianth vihiie. i\«< triaugular. shiniujj, black. — Q. Julv — "^i-nt. On 

 rocks. 6 — 10 inches. 



h. Flowers in axillary or ter.ninal spikes. Stamens 5 — 8. Stigmas 

 mostly 2. 



4. P. puncta'tum, (Ell.) Stem slender, branched, sometimes dcoira- 

 berit at the base. Leaves with pellucid punctures, lanceolate, acute, 

 with a sheathing petiole, scabrous on the margin and midrib. Stipules 

 ciliate, pubescent. Flowers in filiform spikes. Stamens 8. Styles 3- 

 parted. Plant very acrid. — 0. Aug. — Sept, Wet ground. 1—2 ft. 



Water Pepper. Smart-iceed^ 



5. P. mi'te, (Pers.) Stem decumbent and erect, hairy at the summit, 

 branching. Leaves narrow-lanceolate, acuminate, entire, with long 

 ciiicB. Flowers in crowded spikes. Stamcjis 8. Styles 8 -parted. Pe- 

 rianth purple. — %. July — Sept. Ditches and ponds. 1 — 2 feet. 



6. P. Vieginia'num, (L.) Stem simple, hairy toward the summit. 

 Leaves broad-lanceolate, acuminate, scabrous, with fringed serratures. 

 Stipules ciliate. Spikes axillary and terminal. Stamens 5. Styles 2. 

 Perianth white. — 2f . July — Aug. Shady woods. 2 — 1 feet, 



7. P. seta'ceum, (Bald.) Stem erect, glabrous. Leaves broad-lancc 

 olate, acuminate. Stipules long, fringed. Flowers in hirsute spikes, on 

 long peduncles. Stamens 8. Style 3-cleft. Perianth white. — IX. June 

 —Aug, Stiflf soils, 1—2 feet. 



8. P. hirsu'tum, (Walt.) Stetn erect, decumbent, branching, hairy 

 Leaves oblong, often slightly cordate at the base, hairy, entire. Flowers 

 in slender spikes. Stamens 8, Style 3-cleft. Perianth white, — 2f 

 May — Aug. Shallow ponds. 1 — 2 feet. 



9. P. incarna'tum, (Ell.) Stem geniculate, slightly angled, scabrous 

 toward the summit. Leaves lanceolate, serrulate, pubescent on the un- 

 per surface, large, jP/ow-ers in several simple spikes. Stamens 6. Style 

 2 cleft. Perianth white, or rose-colored, — If. July — Oct, Ditciies 

 and ponds. 2 — 3 feet. 



10. P. Peknstlva'nicum, (L.) Stem geniculate, with swollen joints, 

 glabrous, angled. Leaves lanceolate, slightly hairy, petioled. Flotrrrs 

 in crowded oblong spikes, large. Starnenx 8. Style 2-cleft. Pedimrlts 

 hispid. Pma?i/A reddish. — ©. July — Sept Margins of ponds. 2 — 

 4 feet. 



11. P. orien'tale, (L.) Ste}}i erect. Leaves large, ovate, acuminate, 

 minutely pubescent, petioled. Stipules hairy. Flowers in crowded 

 spikes, large. Stamens 6. Styles 2, Perianth rose-color, or white. — 

 ©, July — Aug, Cultivated grounds, 4 — 5 feet. Prime s Feather. 



c. Spikes in panicles. 



12. P, polyga'mum, (Vent.) Stem erect, branching, glabrou.". Lraveh 

 small, sessile, with glabrous stipules. Spikes paniculate, jt.intod. Flow 

 ers solitary at each joint. Stamens S . Styles Z. Perianth whUv.— 

 U. July— Sept. Pine-barrens, Middle Car, and Geo. 6— 8 inches 



