Aerva Forssk.
  • Fl. Aegypt.-Arab. 170. 1775.


Cite taxon page as 'WFO (2020): Aerva Forssk. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000000806. Accessed on: 18 Feb 2020'

General Information

Herbs or subshrubs. Stem erect, stoloniferous or climbing. Leaves alternate or opposite, margin entire. Flowers perfect, unisexual or dioecious, small or very small. Inflorescences spikes, terminal or axillary, simple or in complex thyrsoid structures. Bracts and bracteoles membranous, persistent or bracteoles falling off with perianth in fruit. Tepals 4 or 5, ovate or oblong, membranous or papery, lanose, with only 1 vein. Stamens 4 or 5; filaments subulate, unequal, united to short cup at base, alternating with pseudostaminodes, pseudostaminodes subulate to oblong; anthers 2-loculed. Ovary obovoid or subglobose, glabrous; style persistent; stigmas 2, capitate. Utricles ovoid, compressed, membranous, indehiscent or irregularly dehiscent (bursting), falling off with perianth. Seeds reniform-orbicular, lenticular, compressed.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
    • 6
    • ]. 

    Morphology

    Leaves and branches opposite or alternate, leaves entire.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Flowers hermaphrodite or dioecious, sometimes probably polygamous, bibracteolate, in axillary and terminal sessile or pedunculate bracteate spikes, one flower in the axil of each bract.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Ovary with a single pendulous ovule; style very short to slender and distinct; stigmas 2, short to long and filiform (sometimes solitary and capitate, flowers then probably functionally male).

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Capsule thin-walled, bursting irregularly.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Perianth segments 5, oval, or lanceolate-oblong, membranous margined with a thin to wider green centre, the perianth deciduous with the fruit but bracts and bracteoles persistent.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Stamens 5, shortly monadelphous at the base, alternating with subulate or rarely narrowly oblong and truncate or emarginate pseudostaminodes; anthers bilocular.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Seed compressed-reniform, firm, black.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Perennial herbs (sometimes flowering in the first year), prostrate to erect or scandent.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 4
    • ]. 

    Seed compressed-reniform, firm, black.

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Leaves and branches opposite or alternate, leaves entire

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Perennial herbs (sometimes flowering in the first year), prostrate to erect or scandent

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Flowers hermaphrodite or dioecious, sometimes probably polygamous, bibracteolate, in axillary and terminal sessile or pedunculate bracteate spikes, one flower in the axil of each bract

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Stamens 5, shortly monadelphous at the base, alternating with subulate or rarely narrowly oblong and truncate or emarginate pseudostaminodes; anthers bilocular

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Perianth-segments 5, oval- or lanceolate-oblong, membranous-margined with a thin to wider green centre, the perianth deciduous with the fruit but bracts and bracteoles persistent

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Capsule thin-walled, bursting irregularly

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Ovary with a single pendulous ovule; style very short to slender and distinct; stigmas 2, short to long and filiform (sometimes solitary and capitate, flowers then probably functionally ♂)

  • Provided by: [B].Plants Of the World Online Portal - FTEA
    • Source: [
    • 5
    • ]. 

    Synonyms

     Information From

    Amaranthaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    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
    • B
    Plants Of the World Online Portal - FZ
    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
    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.
    • 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).