Houstonia caerulea

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Houstonia caerulea
Bluets (Houstonia caerulea) Hedyotis caerulea.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Houstonia
Species:
H. caerulea
Binomial name
Houstonia caerulea
Synonyms

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]

Contents

Description

Azure Bluet (Houstonia caerulea) in Pennsylvania, close-up Azure Bluet (Houstonia caerulea) in Pennsylvania.jpg
Azure Bluet (Houstonia caerulea) in Pennsylvania, close-up

Houstonia caerulea is a perennial herb [2] that produces showy flowers approximately 1 cm (0.39 in) 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 (7.9 in) 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]

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Houstonia longifolia, commonly known as long-leaved bluet or longleaf summer bluet, is a perennial plant in the family Rubiaceae. It can be found throughout most of the Eastern United States and Canada. It has been reported from every state east of the Mississippi River except Delaware, plus North Dakota, Minnesota, Missouri, Arkansas and Oklahoma, with isolated populations in Kansas and Texas. Also, all Canadian provinces from Quebec to Alberta. It prefers upland woods in poor, dry, often sandy soil.

<i>Houstonia procumbens</i> Species of plant

Houstonia procumbens, the roundleaf bluet, is a perennial species in the family Rubiaceae. It is native to the southeastern United States: Louisiana, Mississippi, Alabama, Georgia, Florida and South Carolina. Its native habitats include disturbed sites, and moist, open, sandy areas. Flowers bloom March to October.

References

  1. 1 2 Justice, William S.; Bell, C. Ritchie; Lindsey, Anne H. (2005). Wild Flowers of North Carolina (2. printing. ed.). Chapel Hill, NC: Univ. of North Carolina Press. p. 236. ISBN   0807855979.
  2. 1 2 3 "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2021-10-13.
  3. Biota of North America Program
  4. 1 2 "Houstonia caerulea (little bluet): Go Botany". gobotany.nativeplanttrust.org. Retrieved 2021-11-04.
  5. Scoggan, H. J. 1979. Dicotyledoneae (Loasaceae to Compositae). Part 4. 1117–1711 pp. In Flora of Canada. National Museums of Canada, Ottawa.

Further reading