. 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. 6. Rumex mexicanus Meisn. White, Pale or Willow-leaved Dock. Fig. 1602. R. salicifolius Hook. Fl. Bor. Am. 2: 129. 1840. Not Weinm. 1821. R. mexicanus Meisn. in DC. Prodr. 14: 45. 1856. Perennial, glabrous, pale green; stem erect or as- cending, simple or branched, grooved, flexuous, i°-3° high. Leaves lanceolate, linear-lanceolate or the lower oblong, acute or
. 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. 6. Rumex mexicanus Meisn. White, Pale or Willow-leaved Dock. Fig. 1602. R. salicifolius Hook. Fl. Bor. Am. 2: 129. 1840. Not Weinm. 1821. R. mexicanus Meisn. in DC. Prodr. 14: 45. 1856. Perennial, glabrous, pale green; stem erect or as- cending, simple or branched, grooved, flexuous, i°-3° high. Leaves lanceolate, linear-lanceolate or the lower oblong, acute or acuminate at both ends, or rarely, obtuse at the apex, petioled; racemes erect or ascending, dense, in fruit interrupted below; flowers in dense clusters; calyx pale green, 1" long, pedicelled, winged in fruit; pedicels slightly longer than the wings, jointed near the base; wings trian- gular-ovate, ii" long, undulate or subdentate, each bearing a narrowly ovoid or oblong tubercle; achene 1" long, dark red, smooth, shining, its faces concave, its angles slightly margined. In moist, rich or rocky soil, Labrador and Newfound- land to Maine, British Columbia, Texas and Mexico. Occasionally introduced eastward. May-Sept. 7. Rumex verticillatus L. Swamp Dock. Fig. 1603. Rumex verticillatus L. Sp. PI. 334. I7S3- Perennial, glabrous, rather bright green; stem stout, grooved, simple or nearly so, erect, ascend- ing or decumbent, 2°-5° long, more or less flexuous when old. Leaves narrowly oblong, oblong-lanceo- late or lanceolate, 2-12' long, narrowed at both ends or obtusish at the apex, slightly papillose, long- petioled; racemes interrupted below, spreading in fruit; flowers in rather dense whorls; calyx green, 1" long, winged in fruit; pedicels stout, thickened above, jointed near the base, 1-5 times as long as the wings; wings broadly deltoid, 2" long, more or less decurrent on the pedicel, each bearing a narrowly ovoid tubercle; achene ii" long,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
