Photo: Echinodorus grandiflorus.

ssp. aureus. Flower. Helsinki bot.g. (Kaisan.), Finland. Greenhouse. 2008-04-18.
Echinodorus grandiflorus Cham. & Schltdl.) Micheli Bot. syn.: Alisma grandiflorum Cham. & Schltdl., Echinodorus argentinensis Rataj, Echinodorus muricatus Griseb.
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Photo: Echinodorus grandiflorus.