Pictorial guide to the flora of the British Isles

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Hydrocharitaceae

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Taxa with pictures are marked [Pictured]

  1. Egeria densa Planch. – large-flowered waterweed
  2. Elodea callitrichoides (Rich.) Casp. – South American waterweed
  3. [Pictured] Elodea canadensis Michx. – Canadian waterweed
  4. [Pictured] Elodea nuttallii (Planch.) H. St. John – Nuttall’s waterweed
  5. Hydrilla verticillata (L. f.) Royle – Esthwaite waterweed
  6. [Pictured] Hydrocharis morsus-ranae L. – frogbit
  7. [Pictured] Lagarosiphon major (Ridl.) Moss ex V. A. Wager – curly waterweed
  8. Najas flexilis (Willd.) Rostk. & W. L. E. Schmidt – slender naiad
  9. [Pictured] Najas marina L. – holly-leaved naiad
  10. [Pictured] Stratiotes aloides L. – water soldier
  11. Vallisneria spiralis L. – tapegrass
L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne