Achyranthes japonica

(Miquel) Nakai

Bot. Mag. (Tokyo) 34: 39. 1920.

Common names: Japanese chaff-flower
Introduced
Basionym: Achyranthes bidentata var. japonica Miquel Ann. Mus. Bot. Lugduno-Batavi 2: 132. 1865
Treatment appears in FNA Volume 4. Treatment on page 437. Mentioned on page 435.

Plants perennial. Stems 0.75–1.5 m, glabrous or slightly pubescent. Leaf-blades ovate-elliptic, 2.5–13.5 × 0.2–6.8 cm, base tapering, apex acute to acuminate, pubescent on veins abaxially, short-pubescent adaxially, varying to glabrous or glabrescent. Inflorescences 2–4 cm in flower, elongating to 21 cm in fruit; bracteoles spinose; basal wings attached at base and sometimes slightly on sides. Flowers: tepals 5, 4–5 mm; pseudostaminodes with margins entire, denticulate, or slightly 2-lobed at apex. Utricles elliptic, 2.5 mm.


Phenology: Flowering summer.
Habitat: Wooded riverbanks
Elevation: 100-200 m

Distribution

V4 857-distribution-map.gif

Introduced; Ky., Ohio, W.Va., Asia

Discussion

The plants of Achyranthes japonica in our area evidently belong to var. hachijoensis Honda, which has glabrous or glabrescent leaves.

Lower Taxa

None.

"elongating" is not a number.

... more about "Achyranthes japonica"
glabrescent +, glabrous +, short-pubescent +  and pubescent +
acute;acuminate +
Kenneth R. Robertson +
(Miquel) Nakai +
tapering +
Achyranthes bidentata var. japonica +
ovate +  and orbiculate or broadly rhombate +
Japanese chaff-flower +
Ky. +, Ohio +, W.Va. +  and Asia +
100-200 m +
peripheral +
spaced +  and crowded +
hypogynous +
minute +  and small +
indurate +  and coriaceous +
not +  and dehiscent +
Wooded riverbanks +
many-flowered +  and pedunculate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (13.5 cm135 mm <br />0.135 m <br />) +
ovate-elliptic +
0.2cm;6.8cm +
turbinate +  and obovoid +
few-branched +  and simple +
Flowering summer. +
2-lobed +  and denticulate +
Bot. Mag. (Tokyo) +
medley1985a +
brown +, reddish-brown +  and black +
ovoid +  and obovoid +
Introduced +
erect +  and ascending +
pubescent +  and glabrous +
75 cm750 mm <br />0.75 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
elongate +
Achyranthes japonica +
Achyranthes +
species +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
cylindric +  and elliptic +
2.5 cm25 mm <br />0.025 m <br /> (?) +
membranous +