; Hist. Pl. Guiane 1: 128, t. 49 (1775)
Distribution: tropics and subtropics, esp. America. Species circumscription is in some cases quite disputed.
= Allocalyx Cordem.; Fl. Réunion [Cordemoy] 486 (1895)
= Anisocalyx Hance; Ann. Bot. Syst. [Walpers] 3: 195 (1853)
= Benjaminia Mart. ex Benj.; Fl. Bras. [Martius] 10: 255 (1847)
= Blanckia Neck.; Elem. Bot. [Necker] 1: 347 (1790)
= Brami Adans.; Fam. Pl. [Adanson] 2: 208 (1763)
= Bramia Lam.; Encycl. [J.Lamarck et al.] 1: 459 (1783), nomen prius
= Caconapea Cham.; Linnaea 8: 28 (1833)
= Calytriplex Ruiz & Pav.; Fl. Peruv. Prodr. 96 (1794)
= Cardiolophus Griff.; Madras J. Lit. Sci. 4: 376 (1836)
= Conobea Aubl.; Hist. Pl. Guiane 2: 639, t. 258 (1775)
= Habershamia Raf.; Neogenyton 2 (1825)
= Heptas Meisn.; Pl. Vasc. Gen. [Meisner] 293, Comm. 202 (1840)
= Herpestis C.F.Gaertn.; Suppl. Carp. 3: 186 (1807)
= Hydranthelium Kunth; Nov. Gen. Sp. [H.B.K.] 7: 202, t. 646 (1825)
= Hydropyxis Raf.; Fl. Ludov. 94 (1817)
= Hydrotrida Willd. ex Britton & A.Brown; Ill. Fl. N. U.S. [Britton & Brown], ed. 2, 3: 193 (1913)
= Macuillamia Raf.; Neogenyton 2 (1825)
= Maeviella Rossow; Arch. Jard. Bot. Rio de Janeiro 27: 172 (1983-1985 publ. 1985)
= Mella Vand.; Fl. Lusit. Brasil. Spec. 43, f. 53 (1788)
= Moniera B.Juss. ex P.Browne; Civ. Nat. Hist. Jamaica 269 (1756), nom. rej.
= Monocardia Pennell; Proc. Acad. Nat. Sci. Philadelphia 72: 155 (1920)
= Naiadothrix Pennell; Mem. Torrey Bot. Club 16: 105 (1920)
= Quinquelobus Benj.; Linnaea 20: 316 (1847)
= Ranapalus Kellogg; Proc. Calif. Acad. Sci. 7: 113 (1877)
= Ranaria Cham.; Linnaea 8: 30 (1825)
= Septas Lour.; Fl. Cochinch. 392 (1790), nom. illeg.
= Septilia Raf.; Fl. Tellur. 4: 68 (1836)
= Silvinula Pennell; Mem. Torrey Bot. Club 16: 103 (1920)
= Sinobacopa D.Y.Hong; Acta Phytotax. Sin. 25(5): 393 (1987)
= Sphaerotheca Cham. & Schltdl.; Linnaea 2: 605 (1827)