A genus of plants, including a great number of species. Lobelia inflata, or Indian tobacco, is an annual plant of North America, whose leaves contain a poisonous white viscid juice, of an acrid taste. It has often been used in medicine as an emetic, expectorant, etc. Lobelia cardinalis is the cardinal flower, remarkable for the deep and vivid red color of its flowers.

any plant or flower of the genus Lobelia

a blue, star-shaped flower

Actions: Anti-asthmatic, anti-spasmodic, expectorant, emetic, nervine. Indications: Lobelia is a useful systemic relaxants. It has a general depressant action on the central and autonomic nervous system and on neuro-muscular action. Its primary specific use is in bronchitic asthma and bronchitis. Lobeline is a powerful respiratory stimulant that will stimulate catarrhal secretion and expectoration while relaxing the muscles of the respiratory system.

Lobelia (also known as Indian Tobacco, Asthma Weed, Pukeweed, or Vomitwort) is a genus in the family Campanulaceae, comprising some 200 species, some of which are cultivated in gardens. These include Lobelia cardinalis (Cardinal Flower or Indian Pink), Lobelia siphilitica (Blue Lobelia), Lobelia fulgens and Lobelia erinus, as well as some hybrids.