NameThatPlant.net: Houstonia nigricans var. nigricans

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia nigricans var. nigricans FAMILY Rubiaceae Go to FSUS key

Dig deeper at SERNEC, a consortium of southeastern herbaria.

INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Stenaria nigricans var. nigricans FAMILY Rubiaceae

INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2015)

Stenaria nigricans var. nigricans

INCLUDED WITHIN Floristic Synthesis of North America (Kartesz, 1999)

Hedyotis nigricans var. nigricans

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

Hedyotis nigricans

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Houstonia angustifolia

COMMON NAME:
Diamond-flower, Glade Bluet, Prairie Bluet

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

image of Houstonia nigricans var. nigricans, Diamond-flower, Glade Bluet, Prairie Bluet

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hoan2_001_lvd

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Houstonia nigricans var. nigricans FAMILY Rubiaceae

INCLUDED WITHIN PLANTS NATIONAL DATABASE:
Stenaria nigricans var. nigricans FAMILY Rubiaceae

INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Stenaria nigricans var. nigricans

INCLUDED WITHIN Floristic Synthesis of North America (Kartesz, 1999)
Hedyotis nigricans var. nigricans

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

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Houstonia angustifolia

2963

Forb
Perennial

Habitat: limestone barrens, limestone glades, limestone rocky bluffs, blackland prairies, longleaf pine sandhills, coastal dunes, coastal grasslands, scrubby pine flatwoods, per Weakley's Flora

Native to Georgia

Rare

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

LEAVES:
Simple
Opposite
Margins entire

FLOWER:
Spring/Summer/Fall
White/Lavender
Radially symmetrical
4 sepals
4-lobed funnelform corolla
4 included stamens
Bisexual

FRUIT:
Spring/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".