Photo: Echinodorus grandiflorus 1.
Botanical name:
Flowering plant. Botanical garden Kaisaniemi, Helsinki, Finland. Greenhouse. 2008-04-18.
Echinodorus grandiflorus Cham. & Schltdl.) Micheli
Bot. syn.: Alisma grandiflorum Cham. & Schltdl., Echinodorus argentinensis Rataj, Echinodorus muricatus Griseb.