We don't have synonyms for plantane yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pentane, planting and plantago.
(n) :
Obsolete spelling of plantain. [Any plant of the genus Plantago, with a rosette of sessile leaves about 10 cm (4") long with a narrow part instead of a petiole, and with a spike inflorescence with the flower spacing varying widely among the species. See also psyllium.]
(n) :
Obsolete spelling of plantain. [Any plant of the genus Plantago, with a rosette of sessile leaves about 10 cm (4") long with a narrow part instead of a petiole, and with a spike inflorescence with the flower spacing varying widely among the species. See also psyllium.]