A member of the genus Lobelia, flowering plants in the Lobelioideae subfamily of family Campanulaceae, containing many species, some of which are garden plants.

plural of lobelia

Lobelia siphilitica, native to almost all of eastern and central North America.

plural of great blue lobelia

plural of lobeliad

(botany) Any plant of the genus Lobelia

(botany, dated) Of or pertaining to the former plant family Lobeliaceae (now subfamily Lobelioideae in family Campanulaceae), including the lobelia.