Synonyms: Gyrostachys bonariensis (homotypic); Pachygenium bonariense (homotypic); Pachygenium callosum; Pachygenium saltense; Pelexia bonariensis var. robusta; Pelexia callosa (heterotypic); Pelexia geraliana; Pelexia saltensis; Spiranthes bonariensis (homotypic); Spiranthes saltensis (heterotypic); Stenorhynchus bonariensis; Stenorhynchus saltensis; Stenorrhynchos bonariense (homotypic); Stenorrhynchos bonariense var. bombyliferum; Stenorrhynchos bonariense var. robustum; Stenorrhynchos bonariensis; Stenorrhynchos saltense; Stenorrhynchos saltensis; Stenorrhynchus bonariensis; Stenorrhynchus saltensis