NameThatPlant.net: Houstonia longifolia var. glabra

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia longifolia var. glabra 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 Floristic Synthesis of North America (Kartesz, 1999)

Houstonia longifolia

INCLUDED WITHIN The Genera of Cinchonoideae (Rubiaceae) in the southeastern US (Rogers, 1987)

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:
Granite Dome Bluet

To see larger pictures, click or hover over the thumbnails.

image of Houstonia longifolia var. glabra, Granite Dome Bluet

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_holo_001_lvd

JK Marlow jkm120505_245

May Rabun County GA

Chattahoochee National Forest

Leaves 1.5-6.0mm wide, 4-11x long as wide. Stems glabrous or glabrate, per Weakley's Flora.

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia longifolia var. glabra 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 Floristic Synthesis of North America (Kartesz, 1999)
Houstonia longifolia

INCLUDED WITHIN The Genera of Cinchonoideae (Rubiaceae) in the southeastern US (Rogers, 1987)
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

2964

Forb
Perennial

Habitat: Seasonally and periodically wet soils of shallow soil mats and crevices of granitic domes, per Weakley's Flora

Native to the Carolinas & Georgia

Uncommon in NC Mountains, rare in GA & SC

map
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!

If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".

Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".