Aponogetonaceae Planch.
  • Bot. Mag. , ad pl. 4894. 1856. (1 Jan 1856)
  • Aponogeton or Cape-pondweed Family


Cite taxon page as 'WFO (2019): Aponogetonaceae Planch. Published on the Internet; http://www.worldfloraonline.org/taxon/wfo-7000000040. Accessed on: 23 Oct 2019'

General Information

Herbs, perennial, rhizomatous, caulescent; turions absent. Leaves alternate, floating [submersed], petiolate [sessile]; sheath not persisting longer than blade, not leaving circular scar when shed, not ligulate, not auriculate; blade ovate to narrowly lanceolate [linear]; intravaginal squamules (i.e., minute appressed, planate trichomes attached at basal edge) scales, more than 2. Inflorescences terminal, spikes, subtended by spathe, pedunculate; peduncle following fertilization not elongating, not spiraling. Flowers bisexual [unisexual]; subtending bracts absent; perianth present [absent]; tepals 1[--6]; stamens 6--18[--50] in 2--3[--4] series, not epitepalous; anthers distinct, dehiscing longitudinally; pollen ellipsoid; pistils 2--6[--9], distinct, not stipitate; ovules basal-marginal, anatropous. Fruits follicles. Seeds 4; embryo straight.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 3
    • ]. 

    Herbs, perennial, freshwater aquatic. Rhizome tuberous, with fibrous roots. Leaves submerged and/or floating, basal, long petiolate, broadly elliptic to linear, with few primary veins and numerous transverse secondary veins, sheathed at base. Inflorescence usually a simple or 2-forked terminal spike; spathe present, but usually very early caducous. Flowers hermaphroditic or unisexual. Perianth segments 1-3 or rarely absent, white, yellow, mauve, or bluish violet, often petaloid, persistent. Stamens 6 to many; filaments elongated, free, filiform or flattened; anthers extrorse, 2-celled, opening by longitudinal slits. Carpels 3-6(-8), free or slightly united near base; ovary superior; style short; ovules 2-8 per carpel. Fruit a whorl of follicles. Seeds without endosperm; embryo straight.

  • Provided by: [C].Flora Of CHina @ efloras.org
    • Source: [
    • 4
    • ]. 

    Morphology

    Fruits opening on the adaxial side

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

    Carpels free, 3-6, sessile; style short; ovules 2 or more, ascending

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

    Stamens 6 or more, free, hypogynous, persistent; anthers extrorse, 2-locular

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

    Perianth-segments 1-3, or absent, sometimes petaloid and bract-like, equal or unequal, usually persistent

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

    Flowers hermaphrodite or rarely unisexual, spicate-scapose, spike simple or usually 2- (rarely up to 8-) forked, without bracts

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

    Leaves long-petiolate, or sessile, oblong-elliptic to linear, with few principal parallel nerves and numerous transverse secondary nerves

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

    Fresh-water aquatic herbs with submerged or floating leaves; rhizome tuberous, with fibrous roots

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

    Seeds without endosperm

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

    Rhizomatous glabrous monoecious or rarely dioecious herbs with tubers, usually growing submerged in fresh water or (after drying up) on wet soil

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Fruit a 1–14-seeded follicle

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Seeds discoidal to fusiform, straight or slightly curved, with a simple or double testa; endosperm absent

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Leaves all basal and alternate, simple and usually with long petioles; blades oblong to linear

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Inflorescence usually a simple or bifid spike (rarely the spike digitate and divided into 3–4 parts), at first enclosed in a thin caducous spathe, very rarely (in the South African species A. ranunculiflorus) the inflorescence is much abbreviated simulating a >i>Ranunculus flower

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Stamens 1–6, rarely more; filaments free, filiform or flattened; anthers extrorse, 2-thecous, most often only 0.2–0.5 mm. long

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Ovaries 3–8, free or slightly united near their base; each ovary superior and 1-locular, with 1–14 erect ovules borne along one side of the locule-wall or at the base of the locule

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Flowers bisexual or more rarely unisexual

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Tepals 1–6 or absent, petal-like, often persisting in fruit

  • Provided by: [A].Plants Of the World Online Portal - FTEA
    • Source: [
    • 2
    • ]. 

    Literature

    SELECTED REFERENCES

    Bruggen, H. W. E. van. 1973. Revision of the genus Aponogeton (Aponogetonaceae): VI. The species of Africa. Bull. Jard. Bot. Natl. Belg. 43: 1--2, 193--233. Bruggen, H. W. E. van. 1985. Monograph of the Genus Aponogeton (Aponogetonaceae). Stuttgart.

  • Provided by: [B].Flora of North America @ efloras.org
    • Source: [
    • 3
    • ]. 

    Included Genus

    Other Local Names

    NameLanguageCountry
    Aponogeton or Cape-pondweed Family

     Information From

    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
    • A
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Flora of North America Association
    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.
    • C 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
    • D The Trustees of the Royal Botanic Gardens, Kew
    Aponogetonaceae
    World Flora Online Data. 2017.
    • E CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).