e-Key v3 - Ke<span id="jodit_selection_marker_1706518620513_4219428599392592" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>y to Hydrocharit<span id="jodit_selection_marker_1706518620513_5245521893673777" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>aceae Genera
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.
Backtrack a
  • Marine plants
  • Leaves in pairs from creeping rhizome
  • Flowers submerged
  • Perianth segments 3 or ± reduced
 (Halophiloideae)
Halophila
b
  • Freshwater plants
  • Leaves rosulate or cauline
  • Flowers exserted above water during anthesis
  • Perianth segments 3 + 3
 (Hydrocharitoideae)
002
Backtrack a
  • Plants forming long, leafy, submerged stems from a perennial rhizome
  • Spathes sessile, axillary
 002
b
  • Plants rosulate, ± stemless, annual or perennial with runners
  • Spathes pedunculate
 002
Backtrack a
  • Leaves arranged in whorls of 3 or more, apex not recurved, acute, bearing one terminal spine, margin without fibre cells, margin serrulate
 *Egeria
b
  • Leaves spirally arranged, apex often recurved, bearing two spines, margin serrate or toothed
 Lagarosiphon
Backtrack a
  • Male flowers becoming detached at anthesis, free-floating
  • Stamens 1-3
 Vallisneria
b
  • Male flowers remaining attached to plant
  • Stamens 6-15
 Ottelia

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