a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests

in some classifications considered the type genus of a separate family Lobeliaceae

North American lobelia having brilliant red flowers

North American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodic

erect perennial aquatic herb of Europe and North America having submerged spongy leaves and pendulous racemes of blue flowers above the water

tall erect and very leafy perennial herb of eastern North America having dense spikes of blue flowers

in some classifications considered the type genus of a separate family Lobeliaceae