Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA (11/30/12):
Helianthus laetiflorus
FAMILY
Asteraceae
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Showy Sunflower's leaves tend to be arcing to drooping. Read more at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus ×laetiflorus [pauciflorus × tuberosus]
FAMILY
Asteraceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-009:
Helianthus laetiflorus
FAMILY
Asteraceae
SYNONYMOUS WITH
Gray's Manual of Botany (Fernald, 1950)
Helianthus laetiflorus var. laetiflorus
COMMON NAME:
Showy Sunflower, cheerful sunflower
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hesc13_001_lvd
)
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.
)
JK Marlow jkm130713_431
July Greenville County SC
Leaf underside.
)
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.
)
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.
)
JK Marlow jkm120814_518
August Greenville County SC
)
JK Marlow jkm120814_520
August Greenville County SC
)
JK Marlow jkm210905_3331
September Greenville County SC
)
JK Marlow jkm210905_3332
September Greenville County SC
)
JK Marlow jkm210905_3334
September Greenville County SC
Ray florets 15-20; disc florets w reddish lobes, at least tips; anthers dark, per Flora of North America.
)
JK Marlow jkm210905_3337
September Greenville County SC
Phyllaries conspicuously graduated and imbricate, usually appressed, per Weakley's Flora.
COMPARE
involucral bracts of Sunflowers
)
JK Marlow jkm210905_3341
September Greenville County SC
)
JK Marlow jkm210905_3344
September Greenville County SC
Stems scabrous and spreading pubescent, somewhat glabrous above, per Vascular Flora of the Carolinas.
WEAKLEY'S FLORA (11/30/12):
Helianthus laetiflorus
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus ×laetiflorus [pauciflorus × tuberosus]
FAMILY
Asteraceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-009:
Helianthus laetiflorus
FAMILY
Asteraceae
SYNONYMOUS WITH
Gray's Manual of Botany (Fernald, 1950)
Helianthus laetiflorus var. laetiflorus
3537
Forb
Perennial
Native: west of the Carolinas & Georgia
Documented growing wild in GA NC SC
Uncommon (rare in GA, rare in Mountains)
Look for it in disturbed areas, per Weakley's Flora
Click here to see a more detailed map from University of North Carolina at Chapel Hill Herbarium,
or click here to see a map from SERNEC, a consortium of southeastern herbaria.
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!