Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia caerulea
FAMILY
Rubiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Quaker Ladies at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Houstonia caerulea
FAMILY
Rubiaceae
INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Houstonia caerulea
INCLUDED WITHIN Floristic Synthesis of North America (Kartesz, 1999)
Houstonia caerulea
SYNONYMOUS WITH Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis caerulea
SYNONYMOUS WITH Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Hedyotis caerulea
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-08-001:
Houstonia caerulea FAMILY Rubiaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Houstonia caerulea
COMMON NAME:
Quaker Ladies, Common Bluet, Innocence, Azure Bluet
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hoca4_001_lvd
)
JK Marlow jkm160319_032035
March Pickens County SC
Nine Times Preserve
)
Keith Bradley kab_h_caerulea_2659
March Newberry County SC
Lynch's Woods Park
Flowers similar to those of H. serpyllifolia; H. caerulea is a somewhat duller blue, per Weakley's Flora (2020).
)
Terry Holdsclaw tdh_h_caerulea_9599
March Lincoln County NC
Corolla about 1/2" wide, blue to white with a yellow eye, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm140420_466
April Greenville County SC
Chandler Heritage Preserve
Plants forming clumps less than or equal to 4" wide, per Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006).
)
JK Marlow jkm140420_470
April Greenville County SC
Chandler Heritage Preserve
Erect, rising from a basal rosette of spatulate leaves 1/2" long, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm190412_7250
April Rabun County GA
Plants with a well-developed, persistent basal rosette, per Weakley's Flora (2020).
)
JK Marlow jkm210423_9676
April Jackson County NC
)
Richard and Teresa Ware rtw_houstonia_caerulea_3
April
)
Terry Holdsclaw tdh_h_caerulea_0021b
April Catawba County NC
A delicate plant with solitary salverform flowers, per Wildflowers of the Southern Mountains (Smith, 1998).
)
Terry Holdsclaw tdh_houstonia_caerulea_1b
April Catawba County NC
)
JK Marlow jkm170507_715
May Transylvania County NC
Blue Ridge Parkway
)
JK Marlow jkm170507_715b
May Transylvania County NC
Blue Ridge Parkway
)
JK Marlow jkm170507_716
May Transylvania County NC
Blue Ridge Parkway
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia caerulea
FAMILY
Rubiaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Houstonia caerulea
FAMILY
Rubiaceae
INCLUDED WITHIN
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Houstonia caerulea
INCLUDED WITHIN
Floristic Synthesis of North America (Kartesz, 1999)
Houstonia caerulea
SYNONYMOUS WITH
Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis caerulea
SYNONYMOUS WITH
Aquatic & Wetland Plants of Southeastern US (Godfrey & Wooten, 1979 & 1981)
Hedyotis caerulea
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-08-001:
Houstonia caerulea
FAMILY
Rubiaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Houstonia caerulea
696
Forb
Perennial
Habitat: forests, woodlands, openings, lawns, a wide variety of disturbed sites, per Weakley's Flora
Native to the Carolinas & Georgia
Common (uncommon in Coastal Plain of GA & SC)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Basal rosette & opposite
Margins entire
FLOWER:
Winter/Spring/Summer
Blue
(rarely white or lilac)
Eye: Yellow
Radially symmetrical
4 sepals
4-lobed salverform corolla
4 included stamens
Bisexual
FRUIT:
Spring/Summer
Capsule
TO LEARN MORE about this plant, look it up in a good book!
- All About South Carolina Wildflowers (Midgley, 1999) p179
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p133
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p099
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p176
- Newcomb's Wildflower Guide (Newcomb, 1977) p156
- Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000) p10
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p420
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p098
- Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006) p038
- Wild Flowers of NC, 2nd edition (Justice, Bell, & Lindsey, 2005) p236
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p320
- Wildflowers of Tennessee (Carman, 2005) p262
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p305
- Wildflowers of the Southern Mountains (Smith, 1998) p165
- Wildflowers of the Sandhills Region (Sorrie, 2011) p340
- Wildflowers of the Sandhills Region (Sorrie, 2011) p142
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