e-Key <span id="jodit_selection_marker_1711452213626_5702633644973174" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Nymph<span id="jodit_selection_marker_1711452213627_17241430979359107" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>oides
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Menyanthaceae - Nymphoides Ség.

Description:

  • Aquatic herbs, annual or perennial
  • Leaves in a rosette on the rootstock, or alternate along floating stolons; blade circular to ovate, with a sinus at the base
  • Flowers clustered at nodes, pedicellate, subtended by a small bract; sometimes heterostylous
  • Sepals triangular
  • Petals mostly fimbriate inside, often with crested midnerve and margins, white or yellow
  • Capsule developing under water, sometimes regularly dehiscent but often opening irregularly or indehiscent
  • Seeds few to many, round to oval, flattened or convex, smooth to tuberculate
  • x = 9 (2, 8, 10) (polyploidy)

Nomenclature:

  • Nymphoides Ség.
    • Séguier: 121 (1754)
    • Aston: 2 (1969)
    • Raynal: 122 (1971)
    • Raynal: 227 (1974a)
    • Raynal: 405 (1974b)
    • Cook: 128 (1990)
    • Mackinder: 51 (1990)
  • Limnanthemum S.G.Gmel.
    • Gmelin: 527 (1769)

Distribution & Notes:

  • Global: Species ± 20, Africa, Asia, East Indies, Australia and New Zealand
  • Southern Africa: Species 5, Namibia, Botswana, Northern Province, Gauteng, Mpumalanga, Swaziland, KwaZulu-Natal, Western and Eastern Cape

References:

  • ASTON, H.I. 1969. The genus Villarsia (Menyanthaceae) in Australia. Muelleria 2,1
  • COOK, C.D.K. 1990. Aquatic plant book. SPB Academic Publishing, The Hague
  • GMELIN, S.G. 1769. Limnanthemum. Novi commentarii Academiae Scientiarum Imperialis Petropolitanae 14
  • MACKINDER, B. 1990. Menyanthaceae. Flora zambesiaca 7,4
  • RAYNAL, A. 1971. Répartition géographique des Nymphoides (Menyanthaceae) africaines et malgaches. Mitteilungen der Botanischen Staatssammlung München 10
  • RAYNAL, A. 1974a. Le genre Nymphoides (Menyanthaceae) en Afrique et à Madagascar. 1re Partie: Morphologie. Adansonia 2,14(2)
  • RAYNAL, A. 1974b. Le genre Nymphoides (Menyanthaceae) en Afrique et à Madagascar. 2e Partie: Taxonomie. Adansonia 2,14(3)
  • SÉGUIER, J.F. 1754. Plantae veronenses Vol 3. A. Andreoni, Verona

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