An illustrated flora of the 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 102nd meridian ed2illustratedflo02brit Year: 1913 Genus AMARANTH FAMILY. 4. Amaranthus spinosus L. Spiny or Thorny Amaranth. Fig. 1662. Amaranthus spinosus L. Sp. PI. 991. 1753. Rather dark green, glabrous or somewhat pubes- cent above, stem stout, erect or ascending, ridged, usually much branched, sometimes red, l°-4° high. Leaves ovate, rhombic-ovate or the upp
An illustrated flora of the 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 102nd meridian ed2illustratedflo02brit Year: 1913 Genus AMARANTH FAMILY. 4. Amaranthus spinosus L. Spiny or Thorny Amaranth. Fig. 1662. Amaranthus spinosus L. Sp. PI. 991. 1753. Rather dark green, glabrous or somewhat pubes- cent above, stem stout, erect or ascending, ridged, usually much branched, sometimes red, l°-4° high. Leaves ovate, rhombic-ovate or the upper lanceolate, slender-petioled, acute at both ends, 1-3' long, with a pair of rigid stipular spines i'-l' long at each node, the midvein ; flowers monoecious, the pistillate in numerous capitate axillary clusters, mostly shorter than the petioles, the staminate in dense terminal linear-cylindric spreading or droop- ing spikes l'-6' long; bracts lanceolate-subulate about as long as the 5 scarious oblong mucronate- tipped i-nerved sepals, and the thin imperfectly cir- cumscissile utricle; stamens 5. In waste and cultivated soil, Maine to Minnesota, Florida and Mexico. Naturalized from tropical America. .\ troublesome weed southward. Red amaranth. June- Sept. 5. Amaranthus blitoides S. Wats. Prostrate .Amaranth. Fig. 1663. A. bliloides S. Wats. Proc. Am. .\cad. 12: 273. 1877. Nearly or quite glabrous, rather pale green, stem diffusely branched, prostrate and spreading on the gorund, ridged, 6-2° long, often forming mats. Leaves obovate or spatulate, i'-i' long, obtuse or acute at the apex, narrowed into slender petioles, sometimes longer than the blades; flowers polyg- amous, in small axillary clusters mostly shorter than the petioles; bracts oblong to lanceolate-subulate, little longer than the 3 to 5 oblong-lanceolate acute or cuspidate sepals; stamens 3; utricle nearly smooth, circumscissile, equalling or slightly longer than the sepals. In waste places, especiall
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