Aponogeton nudiflorus Peter
  • Abh. Preuss. Akad. Wiss., Phys.-Math. Kl.


Cite taxon page as 'WFO (2020): Aponogeton nudiflorus Peter. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000760990. Accessed on: 27 Sep 2020'

Morphology

Leaves usually many; petiole 5–40 cm. long and 0.5–2 mm. thick, but sometimes wider at the pale or pinkish sheathing base; blade floating on the surface of the water, oblong to oblong-lanceolate (rarely linear-lanceolate), 2–13 cm. long and 0.3–4.5 cm. wide, base cuneate to truncate, tip blunt or acute; midrib distinct and with 2–4 parallel main nerves on each side of the midrib.

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    Flowers white or yellowish white, set in bifid spikes with flowers facing in all directions; peduncles 15–50 cm. long and 0.5–3 mm. thick, greenish, but paler below, not thickened towards the inflorescence; spathes 3–20 mm. long, green to greyish, rather long-persistent.

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    Tepals 2 in ♂ flowers, absent in ♀ flowers, white or cream, 1.5–3 mm. long, ligulate, broadly ovate or obovate, 1-nerved.

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    Stamens usually 6, rarely 7–8, ± as long as the perianth; filaments white, hardly widened towards the base; anthers green to yellow, turning blackish with age.

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    Male spikes relatively laxly flowered, usually 1–8 cm. long and 2–5 mm. wide, consisting of tepals and stamens.

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    Female spikes densely flowered, 1–5 cm. long and 4–8 mm. wide, consisting of ovaries only.

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    Seeds 1.5–2 mm. long and 0.4–0.7 mm. wide, greyish with paler longitudinal ribs; testa double.

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    Follicles green to brown, 3–4 mm. long and 1–2 mm. wide including a 1–1.5 mm. long narrow beak.

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    Plants dioecious.

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    Ovaries 3, greenish, with 3–6 ovules.

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    Tuber globular, oval or irregularly shaped, brown or yellowish brown, 8–30 mm. long and 8–20 mm. thick, with numerous brownish roots in upper part.

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

    Aponogetonaceae
    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
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).
    International Union for Conservation of Nature
    https://www.iucn.org/
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • D All Rights Reserved
    International Union for Conservation of Nature v.3
    https://www.iucnredlist.org/
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • E See IUCN Terms and conditions of use http://www.iucnredlist.org/info/terms-of-use