Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Houstonia longifolia var. compacta
FAMILY
Rubiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Houstonia at Vascular Plants of North Carolina.
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Houstonia longifolia
FAMILY
Rubiaceae
INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Houstonia longifolia
INCLUDED WITHIN Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis longifolia
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-08-006?:
Houstonia longifolia FAMILY Rubiaceae
INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Houstonia longifolia
COMMON NAME:
Eastern Longleaf Bluet
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_holo_001_lvd
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JK Marlow jkm210507_9990
May Greenville County SC
Blackwell Heritage Preserve
Stems densely cinereous-puberulent, per Weakley's Flora (2020).
)
JK Marlow jkm210507_9991
May Greenville County SC
Blackwell Heritage Preserve
The calyx is green with 4 linear-lance-shaped lobes, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
)
JK Marlow jkm210507_9995
May Greenville County SC
Blackwell Heritage Preserve
)
JK Marlow jkm210507_9996
May Greenville County SC
Blackwell Heritage Preserve
)
Roxanna Martin rlm52111_317
May Spartanburg County SC
Flowers funnel-shaped with 4 flaring lobes, at the ends of branches, per Newcomb's Wildflower Guide (Newcomb, 1977).
)
Roxanna Martin rlm52111_320
May Spartanburg County SC
Leaves 1.5-6.0mm wide, 4-11x long as wide. Stems densely cinereous-puberulent, per Weakley's Flora.
)
Roxanna Martin rlm52111_323
May Spartanburg County SC
)
Roxanna Martin rlm5711_292
May Spartanburg County SC
)
Roxanna Martin rlm7210_207
July Spartanburg County SC
Calyx lobes exceed capsule, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Richard and Teresa Ware rtw_h_longifolia_com
July
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Houstonia longifolia var. compacta
FAMILY
Rubiaceae
INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Houstonia longifolia
FAMILY
Rubiaceae
INCLUDED WITHIN
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Houstonia longifolia
INCLUDED WITHIN
Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Hedyotis longifolia
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 173-08-006?:
Houstonia longifolia
FAMILY
Rubiaceae
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933, 1938)
Houstonia longifolia
697
Forb
Perennial
Habitat: Dry rock outcrops and adjacent open woodlands, longleaf pine sandhills, dry sandy woodlands, dry roadbanks, glades and barrens, per Weakley's Flora
Native to the Carolinas & Georgia
Uncommon in NC Mountains & NC Piedmont (rare elsewhere in GA-NC-SC)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite (basal leaves absent or withered at flowering)
Leaves sessile
Margins entire
FLOWER:
Summer
Lavender/White
Radially symmetrical
4 sepals
4-lobed funnelform corolla
4 included stamens
Bisexual
FRUIT:
Summer/Fall
Capsule
TO LEARN MORE about this plant, look it up in a good book!
- Newcomb's Wildflower Guide (Newcomb, 1977) p158?
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p105
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p099?
- Wildflowers in the Field and Forest: Northeastern US (Clemants & Gracie, 2006) p038
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p319
- Wildflowers of Tennessee (Carman, 2005) p263?
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p305?
- Wildflowers of the Southern Mountains (Smith, 1998) p166?
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