Lehtonen, S. & L. Ramella (2017). Typifications and new synonyms in Echinodorus Engelm. and Sagittaria L. (Alismataceae) of the Flora of Paraguay. Candollea 72: 405–407. In Spanish, English and Spanish abstracts. DOI: http://dx.doi.org/10.15553/c2017v722a17
The lectotype specimen of Echinodorus longipetalus Micheli is designated acording to the rules, correcting a prior but erroneous lectotypification. Four infraspecific names in Sagittaria L. are formally treated as synonyms, remaining one dubious name. Sagittaria montevidensis f. flaviflora Chodat is lectotypified.
