Achyranthes japonica (Miq.) Nakai
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Amaranthaceae
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Scientific Name
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Description
Species Description - Perennial 7-15 dm; lvs elliptic, 3-13 × 1.5-7 cm, acute or acuminate, tapering to a petiole to 3.5 cm, short-hairy above and on the veins beneath; spikes at first dense, elongating to as much as 2 dm and then more open; fls divergent at anthesis, sharply reflexed in fr, each subtended by a membranous bract 2 mm and 2 rigid, subulate-spinose bracteoles 2-4 mm, each bracteole with 2 basal, suborbicular, membranous auricles, the bracteoles and fl falling as a unit; sep 5, lance-linear, 4-5 mm, acuminate; sterile lobes of the androecium short, broad, subentire; fr oblong, 2.5 mm, its slender style 1 mm. Wooded, annually flooded river-banks; native of e. Asia, intr. in Ky. and W.Va. Late summer.