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 (Radford, Ahles, & Bell, 1968) 179-65-019:
Helianthus strumosus   FAMILY Asteraceae

 

COMMON NAME:
Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower


Click or hover over the thumbnails to see larger pictures.

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower

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

        

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower

JK Marlow    jkm190905_1352

September    Greenville County    SC

Plants rhizomatous, but not producing tubers, per Weakley's Flora (2018).

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf 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 (2018).

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower

JK Marlow    jkm190905_1355

September    Greenville County    SC

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower

JK Marlow    jkm190905_1357

September    Greenville County    SC

Phyllaries equal to or slightly exceeding disk, apex acute, per Weakley's Flora (2018).

image of Helianthus strumosus, Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf 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, Paleleaf Woodland Sunflower, Paleleaf 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, Paleleaf Woodland Sunflower, Paleleaf Sunflower

Richard and Teresa Ware    rtw_h_strumosus_2

September