Costus L.
  • Sp. Pl. 1: 2. 1753. (1 May 1753)
  • CAÑA AGRIA, CAÑAGRIA


Cite taxon page as 'WFO (2020): Costus L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000009467. Accessed on: 04 Dec 2020'

General Information

Rhizomes horizontal, tuberous. Stems sometimes branched, usually spirally twisted, leafy, rarely plants stemless. Leaf blade oblong to lanceolate. Inflorescences terminal or lateral on separate, short, leafless shoots arising from rhizomes, conical, densely many flowered; bracts imbricate, 1- or 2-flowered. Calyx 3-lobed or -toothed at apex. Corolla tube equaling or longer than calyx. Labellum obovate, large, margin incurved. Stamen petaloid; anther locules linear. Ovary 3-loculed; ovules many per locule, superposed. Style filiform; stigma funnelform. Stylodes absent. Capsule subglobose or ovoid, woody. Seeds many, black; aril lacerate.

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

    COSTUS L.

    Hierbas con tallos frecuentemente contortos en espiral. Hojas arregladas en espiral alrededor del tallo; vainas tubulares. Inflorescencia una espiga terminal en un tallo frondoso o basal en el ápice de un brote afilo separado, considerablemente alargada cuando en fruto (medidas entre paréntesis en las descripciones); brácteas coriáceas, a veces provistas de un apéndice foliáceo; bractéolas dobladas, cimbiformes; labelo 3-lobado, pequeño y tubular o vistoso con un limbo grande y patente; estambre petaloide, angostamente elíptico. Cápsula 3-locular, blanca (roja en C. speciosus); semillas con un arilo grande, lacerado y blanco.

    Género con unas 90 especies principalmente tropicales, ca 60 de las cuales se encuentran en América tropical; 11 especies nativas y 1 cultivada se conocen en Nicaragua y 6 especies adicionales se esperan encontrar.

  • Provided by: [H].Flora de Nicaragua
    • Source: [
    • 8
    • ]. 

    Rhizomatous perennial herbs of moderate to massive stature with unbranched stems (in Panama); leaves spiral, with closed, ligulate sheaths; inflorescence termi- nating the leafy stem (in Panama, elsewhere occasionally on special scapes directly from the rhizome), spiciform, cone-like, with conspicuous persistent imbricated bracts subtending one or few showy or rather inconspicuous flowers; calyx more or less equally 3-lobed, persistent; corolla somewhat unequally 3- lobed; stamen 1, conspicuously petalaceous; labellum (anterior staminodium) at least equalling and frequently far surpassing the corolla; ovary inferior, 3-celled, containing numerous ovules; fruit a tardily dehiscent, somewhat fleshy capsule.

  • Provided by: [F].Flora de Panama
    • Source: [
    • 9
    • ]. 

    Plantas pequeñas a robustas. Hojas con lámina ± grande, linear a elíptica u (ob)ovada; lígula corta o larga,truncada a bilobada. Infl. terminal en un tallo folioso o (menos frecuente) deshojado, estrobilácea; brácteasverdes, amarillas, anaranjadas a rojas, a veces provistas de apéndices foliosos, o la parte apical de las brácteascurvada hacia afuera; bractéola partida hasta la base, 1- ó 2-quillada. Fls. con cáliz generalmente rojizo, pe-queño, rara vez más largo que las brácteas; corola amarilla, anaranjada, roja o blanca; estambre petaloide, delmismo color del labelo, a menudo con el ápice rojizo; labelo pequeño y tubular, o grande y extendido, rojo,anaranjado, amarillo o blanco, a veces con líneas rojas o amarillas; ovario trilocular. Frs. triloculares, corona-dos por un cáliz persistente, irregularmente dehiscentes, al principio carnosos; semillas muchas, negras, con unarilo grande, lacerado, blanco.

  • Provided by: [D].Manual de Plantas de Costa Rica
    • Source: [
    • 10
    • ]. 

    Morphology

    Androecium consisting of 1 broad petaloid staminode (the labellum) and a single free stamen; free stamen petaloid, usually elliptic, entire; anther subterminal

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Calyx tubular, with 3 apical teeth, sometimes split to the base at one side

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Petals 3, all similar, or the posterior a little larger than the laterals; basal third of the petals, and the base of the androecium fused to form a tube

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Fruit a berry, probably indehiscent (but dehiscent in the South American species), usually remaining covered by the bracts (which open out in fruit in some South American species), crowned by the persistent calyx

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Nectaries embedded in the apex of the ovary

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Style filiform, passing between the anther-thecae and ending in a funnel-shaped stigma with a ciliate margin and a dorsal appendage

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Oil cells absent, plant scentless

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Labellum very broad and petaloid, variously coloured, curved into a funnel-shaped structure

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Rhizomatous perennial herbs, terrestrial or (not in E. Africa) epiphytic

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Leaves usually arranged in an open spiral (spiromonostichous), with sheathing bases, rarely in a rosette or (not in E. Africa) solitary; sheaths closed, smooth; ligule present and often prominent, encircling the stem (and sometimes, therefore, incorrectly called an ochrea); base of lamina contracted into a pseudopetiole; lamina of lower leaves reduced, upper ones ovate to obovate, variously pubescent or glabrous; hairs often bicellular

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Leafy stems usually erect and several m. tall, but occasionally very short or creeping

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
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    Flowers large, strongly zygomorphic, 1-2 together in the axil of each bract, each subtended by a bracteole (if 2 flowers are present, one may be rudimentary)

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Seeds hard, blackish, arillate.

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Inflorescences usually condensed into subglobose cone-like spikes, either on specialised bracteate shoots arising from the rhizome, separate from the leafy shoots, or terminating the leafy shoots (both conditions may be found in a single species), or (not in E. Africa) lateral on the leafy shoots

  • Provided by: [E].Plants Of the World Online Portal - FTEA
    • Source: [
    • 6
    • ]. 

    Included Species

    Other Local Names

    NameLanguageCountry
    CAÑA AGRIA, CAÑAGRIA

     Information From

    Costaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    http://www.tropicos.org/ImageSearch.aspx
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B Missouri Botanical Garden
    • C Missouri Botanical Garden
    Manual de Plantas de Costa Rica
    http://www.tropicos.org/Project/Costa%20Rica
    Hammel, B. E.; Grayum, M. H.; Herrera, C.; Zamora, N. Manual de Plantas de Costa Rica. Missouri Botanical Garden Press, 2003-2014
    • D Missouri Botanical Garden
    Plants Of the World Online Portal - FTEA
    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
    • E
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • F Missouri Botanical Garden
    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.
    • G Missouri Botanical Garden
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • H Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • I CC0 1.0 Universal (CC0 1.0).