We don't have synonyms for lobelias yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are lobelia, obelias and lobeline.
(n) :
A member of the genus Lobelia, flowering plants in the Lobelioideae subfamily of family Campanulaceae, containing many species, some of which are garden plants.
(n) :
A member of the genus Lobelia, flowering plants in the Lobelioideae subfamily of family Campanulaceae, containing many species, some of which are garden plants.