Ottelia Pers.
  • Syn. Pl. 1: 400. 1805.
  • [Malay am ottelambel, apparently from otta, to stick to, in reference to thin leaves that stick to body, and am bel, nymphaea]


Cite taxon page as 'WFO (2020): Ottelia Pers. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000027486. Accessed on: 25 Oct 2020'

General Information

Herbs, freshwater. Stems usually cormlike. Leaves all basal, petiolate, usually sheathing at base; blades submerged or sometimes floating, linear to broadly ovate, 3-11-veined. Spathes elliptic or ovate, usually 2-6-winged, apex bifid or trifid, with 1 to many flowers. Flowers bisexual or unisexual and plants dioecious. Male flowers with longer pedicel. Bisexual and female flowers shortly pedicellate or without pedicel. Sepals 3, greenish, linear, oblong, or ovate. Petals 3, colored, orbicular to broadly obovate, much longer and wider than sepals. Stamens 3-15; filaments linear, flattened; anthers laterally dehiscent; staminodes (absent or 1-)3, often present in female flowers. Ovary of 3, 6, or 9 (or more) carpels; ovules numerous; stigmas 2 per style, linear. Fruit cylindric, fusiform, or conic. Seeds numerous, small, often hairy.

  • Provided by: [A].Flora Of CHina @ efloras.org
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    Plants annual or perennial, of fresh waters. Rhizomes and stolons absent [present]. Erect stems rooted in substrate, unbranched, short. Leaves basal, submersed [floating], petiolate; blade lanceolate to reniform [linear], base cuneate to cordate, apex rounded to acute; midvein without rows of lacunae along sides, blade uniform in color throughout; abaxial surface without prickles or aerenchyma, smooth; intravaginal squamules entire. Inflorescences scapose, long-pedunculate; spathes winged or ribbed. Flowers bisexual [unisexual, staminate and pistillate on different plants], sessile [staminate pedicellate], floating or occasionally opening under water; petals white to pink or light violet, often yellow at base; filaments distinct; pollen in monads; ovary 1-locular; styles 3--9, not 2-fid. Fruits oblong, ridged, dehiscing irregularly. Seeds fusiform, covered with hairs.

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

    Nectaries ± 3, located at the base of the styles, lobe-like, ± 1 mm. long

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    Roots simple, adventitious

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    Ovary of 3–20 or more carpels, narrowly cylindric, ellipsoid or ovoid, 1-locular, placentation parietal; ovules numerous, anatropous; perianth-tube narrowly cylindric or cylindric; styles 3–20 or more; stigmas 6–40 or more, 2 per style, linear, papillose.

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    Monoecious, dioecious or hermaphrodite, submerged, freshwater, annual or perennial herbs

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    Staminodes (0–)3 or more.

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    Leaves distichous to spirodistichous, radical, often showing marked differentiation into juvenile and mature leaves; juvenile leaves sessile, linear to ovate, obovate or spathulate, sometimes armed with spines or thorn-like projections; mature leaves often petiolate, sheathing at the base; leaf-blade submerged, partly emergent or floating, elliptic to orbicular, acuminate to obtuse, or rounded, cuneate, obtuse, rounded, cordate or involute at base, smooth or scabrid, with up to 15 prominent longitudinal veins connected by cross-veins; margins green, entire, denticulate, undulate or crispate

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    Stamens 3–15 or more, in whorls of 3, anthers erect, 4-?theecous, latrorsely dehiscent; filaments often somewhat flattened and fleshy, smooth, papillose or ciliate.

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    Stems corm-like, simple or forked or (not in East Africa) rarely elongate, rhizomatous and irregularly branched

  • Provided by: [D].Plants Of the World Online Portal - FTEA
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    • 7
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    Petals 3, ovate to orbicular or obovate, truncate, rounded or obcordate, usually clawed at base.

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    Sepals 3, narrowly lanceolate to ovate, acute to rounded, often persistent in fruit.

  • Provided by: [D].Plants Of the World Online Portal - FTEA
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    Fruit fleshy, cylindrical to ovoid, opening by decay of the pericarp or by regular dehiscence

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    Seeds numerous, narrowly cylindric to ellipsoid, sometimes with a short apical projection; testa membranous, densely covered with unicellular hairs.

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    Male flowers pedicellate, remaining attached to the plant at anthesis; ♀ and hermaphrodite flowers sessile or subsessile

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    Flowers unisexual or bisexual

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    Spathe solitary in leaf-axil, membranous or coriaceous, subsessile or pedunculate, the peduncle often spirally contracting after anthesis in ♀ and ♂ flowers, submergent to emergent, often inflated, narrowly cylindric to ovoid, with wings, ribs, spines, warts or thorns, rarely smooth, 2–6-lobed at the apex, with 1–40 flowers

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    Stipules 0

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    Nodal scales 2–10 per leaf

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    Literature

    SELECTED REFERENCES

    Cook, C. D. K., J.-J. Symoens, and K. Urmi-König. 1984. A revision of the genus Ottelia (Hydrocharitaceae). I1. Generic considerations. Aquatic Bot. 18: 263--274. Cook, C. D. K. and K. Urmi-König. 1984. A revision of the genus Ottelia (Hydrocharitaceae). 2. The species of Eurasia, Australasia, and America. Aquatic Bot. 20: 131--177. Holmes, W. C. 1978. Range extension for Ottelia alismoides (L.) Pers. (Hydrocharitaceae). Castanea 43: 193--194. Turner, C. E. 1980. Ottelia alismoides (L.) Pers. (Hydrocharitaceae) — U.S.A., California. Madroño 27: 177.

  • Provided by: [B].Flora of North America @ efloras.org
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    Other Local Names

    NameLanguageCountry
    [Malay am ottelambel, apparently from otta, to stick to, in reference to thin leaves that stick to body, and am bel, nymphaea]

     Information From

    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.
    • A Missouri Botanical Garden
    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
    Hydrocharitaceae
    World Flora Online Data. 2017.
    • C 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
    • D
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).