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Most habitat and range descriptions were obtained from Weakley's Flora.
Your search found 14 taxa.
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Common Name:
Quaker Ladies, Common Bluet, Innocence, Azure Bluet
Weakley's Flora: (4/14/23) Houstonia caerulea FAMILY: Rubiaceae
INCLUDED WITHIN PLANTS National Database: Houstonia caerulea FAMILY: Rubiaceae
SYNONYMOUS WITH Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia caerulea 173-08-001 FAMILY: Rubiaceae
Habitat: Forests, woodlands, openings, lawns, a wide variety of disturbed sites
Common (uncommon in Coastal Plain of GA & SC)
Native to the Carolinas & Georgia
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Common Name:
Thymeleaf Bluet, Appalachian Bluet, Prostrate Bluet, Marsh Bluet
Weakley's Flora: (4/14/23) Houstonia serpyllifolia FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia serpyllifolia FAMILY: Rubiaceae
SYNONYMOUS WITH Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia serpyllifolia 173-08-002 FAMILY: Rubiaceae
Habitat: Streambanks, grassy balds, moist forests, seepy rock outcrops, spray cliffs, and moist disturbed areas
Common in Mountains
Native to the Carolinas & Georgia
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Common Name:
Tiny Bluet, Small Bluet
Weakley's Flora: (4/14/23) Houstonia pusilla FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia pusilla FAMILY: Rubiaceae
SYNONYMOUS WITH Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia pusilla 173-08-003 FAMILY: Rubiaceae
Habitat: Woodlands, prairies, glades, barrens, lawns, cemeteries, and other disturbed sites
Common (uncommon in Mountains)
Native to Carolinas & Georgia - natural habitats & original distribution obscure
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Common Name:
Southern Bluet
Weakley's Flora: (4/14/23) Houstonia micrantha FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia micrantha FAMILY: Rubiaceae
Habitat: Dunes, sandy soils, granitic flatrocks, other glades, disturbed areas, roadsides
Rare
Native west of the Carolinas & Georgia
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Common Name:
Rose Bluet, Pygmy Bluet
Weakley's Flora: (4/14/23) Houstonia rosea FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia rosea FAMILY: Rubiaceae
Habitat: Bottomlands, lawns, disturbed areas
Rare
Native west of the Carolinas & Georgia
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Common Name:
Creeping Bluet, Roundleaf Bluet, Trailing Bluet, Fairy-footprints
Weakley's Flora: (4/14/23) Houstonia procumbens FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia procumbens FAMILY: Rubiaceae
SYNONYMOUS WITH Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia procumbens 173-08-004 FAMILY: Rubiaceae
Habitat: Beach dunes, moist to wet sandy pinelands
Common in GA & SC (rare in NC)
Native to South Carolina & Georgia
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Common Name:
Summer Bluet, Mountain Bluet, Woodland Bluet, Purple Bluet
Weakley's Flora: (4/14/23) Houstonia purpurea FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia purpurea var. purpurea FAMILY: Rubiaceae
INCLUDED WITHIN Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia purpurea 173-08-005 FAMILY: Rubiaceae
Habitat: Moist and dry woodlands and forests, thinner soils around rock outcrops, and in a variety of disturbed sites, such as paths, old roads, and roadbanks
Common (rare in Coastal Plain)
Native to the Carolinas & Georgia
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Common Name: Lanceleaf Bluet, Midwestern Summer Bluet, Glade Mountain Houstonia, Venus's Pride
Weakley's Flora: (4/14/23) Houstonia lanceolata FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia purpurea var. calycosa FAMILY: Rubiaceae
INCLUDED WITHIN Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia purpurea 173-08-005? FAMILY: Rubiaceae
Habitat: Calcareous prairies and barrens, dry woodlands, banks, rock outcrops, shallow soils around mafic and calcareous rock outcrops
Rare
Native to North Carolina & Georgia
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Common Name:
Roan Mountain Bluet
Weakley's Flora: (4/14/23) Houstonia montana FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia purpurea var. montana FAMILY: Rubiaceae
INCLUDED WITHIN Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia purpurea 173-08-005? FAMILY: Rubiaceae
Habitat: In crevices of rock outcrops at the summits of high elevation peaks of the Southern Blue Ridge, also in thin, frost-heaved, gravelly soils of grassy balds near summit outcrops, from 1250-1950 m in elevation
Rare
Native to North Carolina
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Common Name:
Canada Bluet
Weakley's Flora: (4/14/23) Houstonia canadensis FAMILY: Rubiaceae
SYNONYMOUS WITH PLANTS National Database: Houstonia canadensis FAMILY: Rubiaceae
Habitat: Dry limestone barrens (sometimes locally abundant in shallow soils over limestone), limestone woodlands and outcrops
Rare
Native to Georgia & possibly the Carolinas
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Common Name:
Eastern Longleaf Bluet
Weakley's Flora: (4/24/22) Houstonia longifolia var. compacta FAMILY: Rubiaceae
INCLUDED WITHIN PLANTS National Database: Houstonia longifolia FAMILY: Rubiaceae
INCLUDED WITHIN Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia longifolia 173-08-006? FAMILY: Rubiaceae
Habitat: Dry rock outcrops and adjacent open woodlands, longleaf pine sandhills, dry sandy woodlands, dry roadbanks, glades and barrens
Uncommon in NC Mountains & NC Piedmont (rare elsewhere in GA-NC-SC)
Native to the Carolinas & Georgia
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Common Name:
Granite Dome Bluet
Weakley's Flora: (4/14/23) Houstonia longifolia var. glabra FAMILY: Rubiaceae
INCLUDED WITHIN PLANTS National Database: Houstonia longifolia FAMILY: Rubiaceae
INCLUDED WITHIN Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia longifolia 173-08-006? FAMILY: Rubiaceae
Habitat: Seasonally and periodically wet soils of shallow soil mats and crevices of granitic domes
Uncommon in NC Mountains, rare in GA & SC
Native to the Carolinas & Georgia
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Common Name:
Narrowleaf Bluet, Diffuse-branched Bluet
Weakley's Flora: (4/14/23) Houstonia tenuifolia FAMILY: Rubiaceae
INCLUDED WITHIN PLANTS National Database: Houstonia longifolia FAMILY: Rubiaceae
SYNONYMOUS WITH Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968): Houstonia tenuifolia 173-08-007 FAMILY: Rubiaceae
Habitat: Usually in dry woodlands, often rocky (especially mafic rocks) or sandy
Uncommon
Native to the Carolinas & Georgia
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Common Name: Diamond-flower, Glade Bluet, Prairie Bluet
Weakley's Flora: (4/14/23) Houstonia nigricans var. nigricans FAMILY: Rubiaceae
INCLUDED WITHIN PLANTS National Database: Stenaria nigricans var. nigricans FAMILY: Rubiaceae
Habitat: Limestone barrens, limestone glades, limestone rocky bluffs, blackland prairies, longleaf pine sandhills, coastal dunes, coastal grasslands, scrubby pine flatwoods
Rare
Native to Georgia
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