Native & Naturalized Plants of the Carolinas & Georgia


3537

Forb
Perennial

Native: west of the Carolinas & Georgia
Documented growing wild in GA NC SC

Uncommon (rare in GA)

Look for it in disturbed areas, per Weakley's Flora

map
To see a detailed map, click here

 

LEAVES:
Simple
Opposite

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow with dark lobes
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
Inferior ovary

FRUIT:
Summer/Fall
Brown
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA (11/30/12):
Helianthus laetiflorus   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus Xlaetiflorus [pauciflorus X tuberosus]   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 179-65-009:
Helianthus laetiflorus   FAMILY Asteraceae

SYNONYMOUS WITH Gray's Manual of Botany (Fernald, 1950)
Helianthus laetiflorus var. laetiflorus

 

COMMON NAME:
cheerful sunflower


Click or hover over the thumbnails to see larger pictures.

image of Helianthus laetiflorus

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_hesc13_001_lvd

        

image of Helianthus laetiflorus

JK Marlow    jkm130713_426

July    Greenville County    SC

Leaves w a prominent lateral pair of veins near the base, petiole 1-5 cm long, per Weakley's Flora.

image of Helianthus laetiflorus

JK Marlow    jkm130713_431

July    Greenville County    SC

Leaf underside.

image of Helianthus laetiflorus

JK Marlow    jkm090824_001

August    Greenville County    SC

Roadside

Stems erect, 1-2.5m tall; lower internodes ~ 3-10cm, upper considerably longer, per Vascular Flora of the Carolinas.

image of Helianthus laetiflorus

JK Marlow    jkm090824_005

August    Greenville County    SC

Roadside

Stems scabrous and spreading pubescent, somewhat glabrous above, per Vascular Flora of the Carolinas.

image of Helianthus laetiflorus

JK Marlow    jkm090824_007

August    Greenville County    SC

Roadside

Leaves opposite, lanceolate to lance-ovate, serrate, pubescent and scabrous, per Vascular Flora of the Carolinas.

image of Helianthus laetiflorus

JK Marlow    jkm090824_012

August    Greenville County    SC

Roadside

Phyllaries conspicuously graduated and imbricate, usually appressed, per Weakley's Flora.


click here to see other plants that look similar to this COMPARE involucral bracts of Sunflowers

image of Helianthus laetiflorus

JK Marlow    jkm090824_016

August    Greenville County    SC

Roadside

Ray florets 15-20; disc florets w reddish lobes, at least tips; anthers dark, per Flora of North America.

image of Helianthus laetiflorus

JK Marlow    jkm120814_518

August    Greenville County    SC

image of Helianthus laetiflorus

JK Marlow    jkm120814_520

August    Greenville County    SC