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*Trapa Linnaeus. European Water-chestnut.

Key to Trapa

A genus of 1 highly polymorphic or up to 45 more narrowly defined species, annual aquatic herbs, native of the Old World. Trapa is often placed in a monogeneric family, Trapaceae, but the genus is deeply embedded phylogenetically in Lythraceae (Graham, Diazgranados, & Barber 2011; Hellquist & Graham 2021).

Ref: APG IV (2016); Chorak et al. (2019); Dodd et al. (2019); Graham In Kubitzki, Bayer, & Stevens (2007); Graham, Diazgranados, & Barber (2011); Hellquist & Graham (2021) In Flora of North America Editorial Committee (2021). Show full citations.

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image of plant© oxidized_guacamole, some rights reserved (CC BY-NC) | Trapa bispinosa var. iinumae source | Original Image ⭷
image of plant© Erik Danielson | Trapa natans source | Original Image ⭷
image of plant© Jeff Clark, some rights reserved (CC BY), uploaded by Jeff Clark | Trapa bispinosa var. iinumae source | Original Image ⭷
image of plant© dossification, some rights reserved (CC BY-NC), uploaded by dossification | Trapa bispinosa var. iinumae source | Original Image ⭷

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