Trapa gracilipes Sugim. species synonym

Trapa bicornis var. jinumae (Nakano) Nakano variety synonym

Trapa ucrainica P.Vassil. species synonym

Trapa magnicorona Z.T.Xiong species synonym

Trapa japonica var. chihuensis S.F.Guan & Q.Lang variety synonym

Trapa sibirica var. saisanica Flerow variety synonym

Trapa metschorica P.Vassil. species synonym

Trapa bispinosa var. incisa (Siebold & Zucc.) Franch. & Sav. variety synonym

Trapa ucrainica V.N.Vassil. species synonym

Trapa sajanensis P.Vassil. species synonym

Trapa natans Thunb. species synonym

Trapa pseudorossica P.Vassil. species synonym

Trapa manschurica Flerov species synonym

Trapa alatyrica Sprygin ex V.N.Vassil. species synonym

Trapa pseudoincisa var. complana Z.T.Xiong variety synonym

Trapa natans var. macrocarpa M.M.Jankovic variety synonym

Trapa wolgensis Vasn'ev, 1973 species doubtful

Trapa pseudoincisa Nakai species synonym

Trapa manshurica var. tranzschelii (V.N.Vassil.) Kitag. variety synonym

Trapa fastigiata P.Vassil. species synonym

Trapa muzzanensis var. europaea (Fler.) Tacik variety synonym

Trapa natans var. cruciata Glück variety synonym

Trapa hungarica Opiz species synonym

Trapa muzzanensis Jäggi species synonym

Trapa octotuberculata Miki species synonym

Trapa sibirica var. ussuriensis Flerow variety synonym

Trapa caucasica var. astrachanica Fler. variety synonym

Trapa kazakorum P.Vassil. species synonym

Trapa quadrispinosa Wall. species synonym

Trapa natans var. incisa (Siebold & Zucc.) Makino variety synonym

Trapa europaea Jankovic species synonym

Trapa conocarpa f. flerovii (Dobrocz.) Tacik form synonym

Trapa natans var. amurensis (Flerow) Kom. variety synonym

Trapa bicornis Flerow, 1925 species doubtful

Trapa caucasica var. tanaitica Flerow variety synonym

Trapa hungarica Flerow, 1925 species accepted

Trapa natans var. bohemica Flerow variety synonym

Trapa incisa subsp. quadricaudata Glück subspecies synonym

Trapa natans var. verbanensis (De Not.) Flerow variety synonym

Trapa conocarpa subsp. flerovii (Dobrocz.) Tacik subspecies synonym

Trapa natans Flerow, 1925 species doubtful

Trapa caucasica f. microcarpa Flerow form synonym

Trapa manshurica var. rubra Pshenn. & Kozhevn. variety synonym

Trapa natans var. surajensis Flerow variety synonym

Trapa amurensis var. bispinosa Flerow variety synonym

Trapa natans var. suroshensis Flerow variety synonym

Trapa sibirica var. altaica Flerow variety synonym

Trapa caucasica Flerow species synonym

Trapa raciborskii Jent.-Szaf. ex Tacik species synonym

Trapa caucasica var. colchica (Albov) Flerow variety synonym

Trapa caucasica subsp. astrachanica Flerow subspecies synonym

Trapa mohgaoensis Paradkar & Patki, 1987 species accepted

Trapa bispinosa var. jinumii Nakano variety synonym

Trapa natans var. rubeola Makino variety synonym

Trapa natans var. glaberrima Wahlenb. variety synonym

Trapa bispinosa var. iwasakii Nakano variety synonym

Trapa komarovii var. tetracorna A.I.Baranov & Skvortzov variety synonym

Trapa natans var. conocarpa F.Aresch. variety synonym

Trapa natans f. quadrispinosa (Roxb.) Makino form proparte synonym

Trapa bicornis var. quadrispinosa (Roxb.) Z.T.Xiong variety proparte synonym

Trapa litvinovii var. chihuensis S.F.Guan & Q.Lang variety synonym

Trapa litvinovii V.N.Vassil. species synonym

Trapa natans subsp. incisa Makino subspecies synonym

Trapa maximowczii subsp. tonkinensis Gagnep. subspecies synonym

Trapa verbanensis DeNot. species synonym

Trapa bicornis var. jinumii (Nakano) Nakano variety synonym

Trapa bispinosa subsp. incisa Franch. & Sav. subspecies synonym

Trapa americana Knowlton, 1898 species accepted

Trapa borealis Heer, 1869 species accepted

Neuropteris angulata Newberry, 1861 species synonym

Trapa natans L. species accepted

Trapa longicarpa Jankovic species synonym

Trapa europaea Flerow species synonym

Trapa rossica V.N.Vassil. species synonym

Trapa astrachanica (Flerow) N.A.Winter species synonym

Trapa macropoda Miki species synonym

Trapa conocarpa (F.Aresch.) Flerow species synonym

Trapa annosa Jankovic species synonym

Trapa manshurica Flerow species synonym

Trapa caspica P.Vassil. species synonym

Trapa maximowiczii var. tonkinensis Gagnep. variety synonym

Trapa pseudoincisa var. aspinosa Z.T.Xiong variety synonym

Trapa turbinata P.Vassil. species synonym

Trapa bispinosa var. jinumae Nakano variety synonym

Trapa natans var. carinthiaca Beck variety synonym

Trapa bispinosa var. iinumae Nakano variety synonym

Trapa bicornis L.f., 1782 species accepted

Trapa natans f. suecica Nath. form synonym

Trapa uncinata Z.S.Diao species doubtful

Trapa okensis P.Vassil. species synonym

Trapa media var. pseudorossica (V.N.Vassil.) Tzvelev variety synonym

Trapa incisa var. incisa variety synonym

Trapa uralensis P.Vassil. species synonym

Trapa natans var. clipeata M.M.Jankovic variety synonym

Trapa pseudoincisa var. potaninii (V.N.Vassil.) Tzvelev variety synonym

Trapa brevicarpa Jankovic species synonym

Trapa longicarpa var. contortula Jankovic variety synonym

Trapa sajanensis V.N.Vassil., 1973 species doubtful

Trapa laevis C.Presl ex Nyman species synonym

Trapa pseudincisa var. potaninii (V.N.Vassil.) Tzvelev variety synonym

Trapa amurensis Flerow species synonym

Trapa natans var. hamata Tzvelev variety synonym

Trapa europaea var. egregia Jankovic variety synonym

Trapa maleevii V.N.Vassil. species synonym

Trapa caspica V.N.Vassil. species synonym

Trapa longicarpa f. producticarpa Jankovic form synonym

Trapa borysthenica V.N.Vassil. species synonym

Trapa longicarpa f. concamerata Jankovic form synonym

Trapa saissanica (Flerow) V.N.Vassil. species synonym

Trapa algeriensis V.N.Vassil. species synonym

Trapa natans var. europaea (Flerow) Tzvelev variety synonym

Trapa europaea var. clipeata Jankovic variety synonym

Trapa maeotica Woronow species synonym

Trapa carinthiaca (Beck) V.N.Vassil. species synonym

Trapa longicarpa subsp. perlongicornis Jankovic subspecies synonym

Trapa wolgensis P.Vassil. species synonym

Trapa longicarpa f. columnifera Jankovic form synonym

Trapa rossica var. pseudorossica (V.N.Vassil.) Tzvelev variety synonym

Trapa kozhevnikoviorum Pshenn. species synonym

Trapa jankovicii Tacik species synonym

Trapa natans var. borysthenica (V.N.Vassil.) Tzvelev variety synonym

Trapa macrorhiza Dobrocz. species synonym

Trapa brevicarpa subsp. rubida Jankovic subspecies synonym

Trapa longicarpa f. perangusticornis Jankovic form synonym

Trapa verbanensis De Not. species synonym

Trapa longicarpa f. brevicola Jankovic form synonym

Trapa astrachanica var. caspica (V.N.Vassil.) Tzvelev variety synonym

Trapa danubialis Dobrocz. species synonym

Trapa macropoda var. bispinosa (Flerow) W.H.Wan variety synonym

Trapa brevicarpa f. quadrata Jankovic form synonym

Trapa longicarpa var. mammeata Jankovic variety synonym

Trapa uralensis V.N.Vassil. species synonym

Trapa longicarpa f. bicornis Jankovic form synonym

Trapa raciborskii Jent.-Szaf. species homotypic synonym

Trapa kazakorum V.N.Vassil., 1973 species doubtful

Trapa acicularis V.N.Vassil. species synonym

Trapa incisa Siebold & Zucc. species accepted

Trapa cruciata (Glück) V.N.Vassil. species synonym

Trapa brevicarpa f. perexcelsa Jankovic form synonym

Trapa longicarpa var. loricata Jankovic variety synonym

Trapa assamica Wójcicki species synonym

Trapa kashmirensis Wójcicki species synonym

Trapa hyrcana Woronow species synonym

Trapa conocarpa var. suecica (Nath.) Tzvelev variety synonym

Trapa longicornis V.N.Vassil. species synonym

Trapa longicarpa f. falcata Jankovic form synonym

Trapa kasachstanica V.N.Vassil. species synonym

Trapa hungarica Opiz ex Nyman species synonym

Trapa metschorica V.N.Vassil., 1973 species doubtful

Trapa conocarpa var. pyramidalis (V.N.Vassil.) Tzvelev variety synonym

Trapa longicarpa subsp. valida Jankovic subspecies synonym

Trapa brevicarpa f. muzzanensoides Jankovic form synonym

Trapa longicarpa f. elongata Jankovic form synonym

Trapa longicarpa f. arcuata Jankovic form synonym

Trapa araborum V.N.Vassil. species synonym

Trapa potaninii V.N.Vassil. species synonym

Trapa hankensis Pshenn. species synonym

Trapa media (Glück) V.N.Vassil. species synonym

Trapa longicarpa f. turgida Jankovic form synonym

Trapa brevicarpa var. mirabila Jankovic variety synonym

Trapa longicarpa f. elata Jankovic form synonym

Trapa tranzschelii V.N.Vassil. species synonym

Trapa longicarpa f. amplicornis Jankovic form synonym

Trapa pectinata V.N.Vassil. species synonym

Trapa grozdovii V.N.Vassil. ex V.N.Tikhom. species synonym

Trapa colchica Albov species synonym

Trapa longicarpa f. tesselata Jankovic form synonym

Trapa brevicarpa f. miniata Jankovic form synonym

Trapa longicarpa f. depressa Jankovic form synonym

Trapa longicarpa f. alticarpa Jankovic form synonym

Trapa quadricornis Stokes species synonym

Trapa annosa f. pseudomuzzanensis Jankovic form synonym

Trapa okensis V.N.Vassil., 1973 species doubtful

Trapa flerovii Dobrocz. species synonym

Trapa manshurica var. tranzschelii (V.N.Vassil.) Pshenn. variety synonym

Trapa longicarpa f. subcoronata Jankovic form synonym

Trapa brevicarpa f. effigia Jankovic form synonym

Trapa spryginii V.N.Vassil. species synonym

Trapa pyramidalis V.N.Vassil. species synonym

Trapa annosa f. erecticornis Jankovic form synonym

Trapa numidica V.N.Vassil. species synonym

Trapa fastigiata V.N.Vassil., 1973 species doubtful

Trapa longicarpa var. spatiosa Jankovic variety synonym

Trapa brevicarpa var. delicata Jankovic variety synonym

Trapa sibirica Flerow species synonym

Trapa pseudorossica V.N.Vassil. species synonym

Trapa annosa f. bicornis Jankovic form synonym

Trapa nedoluzhkoi Pshenn. species synonym

Trapa longicarpa var. rubra Jankovic variety synonym

Trapa brevicarpa subsp. calosa Jankovic subspecies synonym

Trapa longicarpa f. coronatoides Jankovic form synonym

Trapa septentrionalis V.N.Vassil. species synonym

Trapa pseudocolchica V.N.Vassil. species synonym

Trapa europaea var. macrocarpa Jankovic variety synonym

Trapa castanea Gilib. species synonym

Trapa longicarpa f. pseudomuzzanensis Jankovic form synonym

Trapa hungarva Flerow species doubtful

Trapa macropoda var. bispinosa Flerow variety synonym

Trapa conocarpa subsp. laevigata (Nath.) Tacik subspecies synonym

Trapa pseudoincisa var. nanchangensis W.H.Wan variety synonym

Trapa bicornis var. iwasakii (Nakano) Nakano variety synonym

Trapa turbinata V.N.Vassil. species synonym

Trapa natans var. vulgata M.M.Jankovic variety synonym

Trapa krauselii P.Vassil. species synonym

Trapa grozdovii V.N.Vassil. species homotypic synonym

Trapa laevis C.Presl species homotypic synonym

Trapa alatyrica Sprygin species homotypic synonym

Trapa wilcoxensis Berry, 1914 species accepted

Trapa occidentalis Knowlton, 1898 species accepted

Trapa alabamensis Berry, 1914 species accepted

Trapa cuneata Knowlton, 1900 species accepted

Trapa natans var. egregia M.M.Jankovic variety synonym

Trapa mammillifera Miki species synonym

Trapa pseudoincisa var. aspinifa Z.T.Xiong variety synonym

Trapa natans var. media Glück variety synonym

Trapa muzzanensis (Jäggi) Szafer species synonym

Trapa microphylla Lesquereux, 1875 species accepted

Trapa angulata Brown, 1962 species accepted