. 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. i. Polygonum maritimum L. Seaside Knot- weed. Fig. 1615. Polygonum maritimum L. Sp. PI. 361. 1753. Polygonum glaucum Nutt. Gen. 1: 254. 1818. Perennial, glaucous, often nearly white, glabrous, root usually deep, woody, stem prostrate or ascend- ing, branched, 8'-2o' long, deeply striate. Leaves oblong, elliptic or sometimes ovate, mostly equalling or longer tha
. 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. i. Polygonum maritimum L. Seaside Knot- weed. Fig. 1615. Polygonum maritimum L. Sp. PI. 361. 1753. Polygonum glaucum Nutt. Gen. 1: 254. 1818. Perennial, glaucous, often nearly white, glabrous, root usually deep, woody, stem prostrate or ascend- ing, branched, 8'-2o' long, deeply striate. Leaves oblong, elliptic or sometimes ovate, mostly equalling or longer than the internodes, 3"-i2" long, fleshy, veined beneath, somewhat rugose above, the margins often revolute; ocreae large, silvery, at length lacer- ate, becoming brown at the base; flowers 1-3 to- gether in the axils, becoming slender-pedicelled; sepals white or pinkish, the margins decidedly pink; achene 3-angled, ovoid, ii"-2" long, acute or blunt, smooth, shining, longer than the calyx. In sands of the seashore, Massachusetts to Florida. Also on the coast of Europe. Coast knot-grass. July- Sept. 2. Polygonum Fowleri Robinson. Fowler's Knotweed. Fig. 1616. Polygonum Fowleri Robinson, Rhodora 4: 67. 1902. Perennial, glabrous, pale green or slightly glau- cous, stem 3'-24' long, prostrate, usually much branched, striate. Leaves ovate-lanceolate, ob- long or obovate, 3"-i5" long, short-petioled, ob- tuse or abruptly pointed at the apex, veined beneath, inconspicuoulsy so above, shorter than the internodes or equalling them; ocreae becom- ing lacerate, silvery, brown and glaucous at the base when old; flowers 2-4 together in the axils; sepals greenish, or the margins white or pinkish; achene ovoid, 3-angled, 2"-2$" long, slightly granular but shining, acuminate, exceeding the calyx. â In waste places, New Brunswick, Anticosti and Quebec to Maine. Also from Alaska to Washington. May-Sept. P. Rayi Babington, with which this was confused in our
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
