. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 13. Persicaria Hydropiper (L.) Opiz. Smart-weed. Water Pepper. Fig. 1642. Polygonum Hydropiper L. Sp. PI. 361. 1753. Persicaria Hydropiper Opiz, Seznam 72. 1852. Annual, glabrous, stem erect, simple or branched, red or reddish, sometimes green, 8'-24' tall. Leaves lanceolate or oblong-lanceolate, 1/-4' long, short- petioled, acute or acuminate at the apex, undu
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 13. Persicaria Hydropiper (L.) Opiz. Smart-weed. Water Pepper. Fig. 1642. Polygonum Hydropiper L. Sp. PI. 361. 1753. Persicaria Hydropiper Opiz, Seznam 72. 1852. Annual, glabrous, stem erect, simple or branched, red or reddish, sometimes green, 8'-24' tall. Leaves lanceolate or oblong-lanceolate, 1/-4' long, short- petioled, acute or acuminate at the apex, undulate or slightly crisped, punctate, ciliate, very acrid; ocreae cylindric, fringed with short bristles, sometimes slightly pubescent, usually swollen at the base by the development of several flowers within; racemes panicled, i'-3' long, narrow, drooping, interrupted; calyx green, 3-5-parted (usually 4-parted) con- spicuously punctate; stamens 4 or sometimes 6; style short, 2-3-parted; achene lenticular or 3-angled, broadly oblong or ovoid, slightly gibbous, ii"-ii" long, granular, dull. In moist waste places, almost throughout North Amer- ica. Naturalized from Europe in our area, perhaps in- digenous in the far Northwest. Biting-persicaria or -knotweed. Bite-tongue. Snake- or sickle-weed. Pep- per-plant. Red-shanks. Red-knees. July—Sept. 14. Persicaria punctata (Ell.) Small. Dotted or Water Smart-weed. Fig. 1643. P. punctatum Ell. Bot. S. C. & Ga. 1: 455. 1817. P. acre Nov. Gen. 2 : 179. 1817. Not Lam. Persicaria punctata Small, Fl. SE. U. S. 379. 1903. Polygonum punctatum leptostachyum (Meisn.) Small, Bull. Torr. Club 19: 356. 1892. Polygonum acre var. leptostachyum Meisn. in DC. Prodr. 14: 108. 1856. Annual or perennial, glabrous or very nearly so, stem erect or ascending, rarely prostrate, simple or branched, i°-3° long. Leaves linear-lanceolate to oblong-lanceolate, 1-8' long, acuminate at both ends, petioled, ciliate, conspicuously punctate, acrid
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
