Native & Naturalized Plants of the Carolinas & Georgia


653

Forb
Perennial

Native to the Carolinas & Georgia

Documented growing wild in GA NC SC

Common (rare in Coastal Plain)

Look for it in woodlands & roadsides, per Weakley's Flora

map
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full sun partial shade shade ...Variable

LEAVES:
Simple
Opposite, sometimes alternate

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
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 strumosus   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus strumosus   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 179-65-019:
Helianthus strumosus   FAMILY Asteraceae

 

COMMON NAME:
Roughleaf Sunflower, Pale-leaf Woodland Sunflower


Click or hover over the thumbnails to see larger pictures.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_hest_001_lvd

        

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1352

September    Greenville County    SC

Plants rhizomatous, but not producing tubers, per Weakley's Flora.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1354

September    Greenville County    SC

Rays usually 10+ in larger heads; anther appendages dark or reddish-brown, per Weakley's Flora.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1355

September    Greenville County    SC

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1357

September    Greenville County    SC

Phyllaries equal to or slightly exceeding disk, apex acute, per Weakley's Flora.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1359

September    Greenville County    SC

Leaves thick, lanceolate, 8-14cm long, acuminate, serrate, scabrous above, per Vascular Flora of the Carolinas.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

JK Marlow    jkm190905_1360

September    Greenville County    SC

Differs from H. tuberosus in its glabrous/glabrate stems and lack of tubers, per Flora of North America.

image of Helianthus strumosus, Roughleaf Sunflower, Pale-leaf Woodland Sunflower

Richard and Teresa Ware    rtw_h_strumosus_2

September