Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (10/20/20):
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
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 (10/20/20):
Houstonia caerulea
FAMILY
Rubiaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Houstonia caerulea
FAMILY
Rubiaceae
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
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
LEAVES:
Simple
Basal rosette & opposite
Margins entire
FLOWER:
Winter/Spring/Summer
Blue
(rarely white or lilac)
Eye: Yellow
Bisexual
Radially symmetrical
4 sepals
4-lobed salverform corolla
4 included stamens
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
- 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