Bluet Houstonia caerulea Other names: Little bluet, Azure bluet, Quaker Ladies, Innocence Family: Rubiaceae (Madder Family) Range: Native to Eastern Canada (Ontario to Newfoundland), and the eastern US (Maine to Wisconsin, south to FL and LA, and scattered in OK.) Native Native Habitat: It thrives in moist acidic soils in shady areas, growing especially well