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Great Blue Lobelia

Lobelia siphilitica, the great blue lobelia, great lobelia, or blue cardinal flower, is a plant species within the family Campanulaceae. It is an herbaceous perennial dicot native to eastern and central Canada and United States. There are two recognized varieties of Lobelia siphilitica, var. siphilitica and var. ludoviciana. Blooming from August to October, it is short-lived, lasting only for a few years.

From Wikipedia, licensed under CC BY-SA 4.0

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Taxonomy

Scientific: Lobelia siphilitica
Genus: Lobelia
Kingdom: Plantae
Habit: herb