Houstonia caerulea, commonly known as azure bluet, Quaker ladies, or bluets,[2] is a perennial species in the family Rubiaceae.[1] It is native to eastern Canada (Ontario to Newfoundland) and the eastern United States (Maine to Wisconsin, south to Florida and Louisiana, with scattered populations in Oklahoma).[3] It is found in a variety of habitats such as cliffs, alpine zones, forests, meadows and shores of rivers or lakes.[4]
| Houstonia caerulea | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Rubiaceae |
| Genus: | Houstonia |
| Species: | H. caerulea |
| Binomial name | |
| Houstonia caerulea | |
| Synonyms | |
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Houstonia caerulea is a perennial herb[2] that produces showy flowers approximately 1 cm across. These flowers are four-parted with pale blue petals and a yellow center. The foliage is a basal rosette with spatula-shaped leaves.[2] Stems are up to 20 cm tall with one flower per stalk. Leaves are simple and opposite in arrangement with two leaves per node along the stem.[4] It thrives in moist acidic soils in shady areas, growing especially well among grasses.[5]
| Taxon identifiers |
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