Heteranthera reniformis Ruiz & Pavón complex. A–B H. multiflora (Griseb.) C.N.Horn s.l., from Missouri, USA: A Habit B Inflorescence C–D H. peduncularis Benth., from Michoacán, Mexico: C Habit D Inflorescence E–F H. reniformis Ruiz & Pavón s.s., from Bahia state, Brazil: E Habit F Inflorescence. Photos A–B by Steve R. Turner, C–D by C.N. Horn, and E–F by M.O.O. Pellegrini