Achyranthes bidentata Blume
  • Bijdr.


Cite taxon page as 'WFO (2021): Achyranthes bidentata Blume. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000516220. Accessed on: 18 Sep 2021'

General Information

Herbs perennial, 70-120 cm tall. Stem green or tinged purple, angulate or quadrangular, appressed or spreading pubescent, or nearly glabrous; branches opposite. Petioles 0.5-3 cm, hairy; leaf blade elliptic or elliptic-lanceolate, rarely oblanceolate, 4.5-12 × 2-7.5 cm, both surfaces annexed or spreading pubescent, base cuneate or broadly cuneate, caudate. Spikes terminal or axillary, 3-5 cm; rachis 1-2 cm, white hairy. Flowers dense, ca. 5 mm. Bracts reflexed after anthesis, broadly ovate, 2-3 mm, apex acuminate; bracteoles 2.5-3 mm, spiny, base 2-parted, apex curved. Tepals shiny, lanceolate, 3-5 mm, with a midvein, apex acute. Stamens 2-2.5 mm; pseudostaminodes slightly serrulate, apex rounded. Utricles yellowish brown, shiny, oblong, 2-2.5 mm, smooth. Seeds light brown, oblong, ca. 1 mm. Fl. Jul-Sep, fr. Sep-Oct. 2n = 42, 84*.

  • Provided by: [B].Flora Of CHina @ efloras.org
    • Source: [
    • 3
    • ]. 

    Erect or straggling herb, 0.6-2 m, much-branched. Stem and branches indistinctly quadrangular, striate or sulcate, subglabrous to moderately (rarely more densely) hairy, the nodes frequently much shrunken when dry. Leaves elliptic-oblong to broadly oval, rarely narrowly lanceolate, shortly or longly acuminate, gradually or more abruptly narrowed below, (4.5-) 9-22 (-28) x (1.2-) 2.5-8.5 (-10) cm, usually thinly hairy (or moderately so along the lower surface of the veins), rarely densely appressed-hairy on the lower surface (not in Pakistan); petioles of main stem leaves 3-20 (-30) mm, shortening above and below. Inflorescences at first dense, finally lax and elongating to as much as 20 cm but commonly about half this length, peduncles 1-4 (-6) cm. Bracts narrowly lanceolate, brownish-membranous, 3-5 mm, glab¬rous. Bracteoles 3.5-5.5 mm, the basal wings c.0.5-1.5 mm, almost or quite free from the commonly outwardly curving spine or (as in Pakistan) variably adnate to it. Perianth segments 5, 4-7 mm, the outer longest, all narrowly lanceolate, very acute, with a distinct midrib and 2 obscure or obvious lateral nerves, narrowly pale-margined. Stamens 5, the filaments 2-3 mm, alternating with subquadrate pseudo-staminodes which are typically simple and shortly dentate or sub-entire, more rarely (and not in Pakistan) with a much shorter rudimentary tooth- or crest-like, shortly toothed dorsal scale. Style slender, 1-2 mm. Capsule 2-3 mm. Seed filling the capsule, cylindrical smooth.

  • Provided by: [D].Flora of Pakistan
    • Source: [
    • 4
    • ]. 

    Morphology

    An erect forest herb, 2–4 ft. high

  • Provided by: [C].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
    • ]. 

    Leaves comparatively large, turning black-green on drying

  • Provided by: [C].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
    • ]. 

    Flowers glistening green.

  • Provided by: [C].Plants Of the World Online Portal - FWTA
    • Source: [
    • 1
    • ]. 

     Information From

    Amaranthaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    Plants Of the World Online Portal - FWTA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C The Trustees of the Royal Botanic Gardens, Kew
    Flora of Pakistan
    http://www.tropicos.org/Project/Pakistan
    Flora of Pakistan. Missouri Botanical Garden. Accessed on Jun. 2020.
    • D Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).