...Variable
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Roughleaf Sunflower at Vascular Plants of North Carolina.
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.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hest_001_lvd
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JK Marlow jkm210824_2973
August Greenville County SC
Differs from H. tuberosus in its glabrous/glabrate stems and lack of tubers, per Flora of North America.
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JK Marlow jkm190905_1352
September Greenville County SC
Plants rhizomatous, but not producing tubers, per Weakley's Flora (2018).
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JK Marlow jkm190905_1354
September Greenville County SC
Heads with 8-15 yellow ray florets encircling tubular yellow disk florets, per Wildflowers of the Atlantic Southeast.
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JK Marlow jkm190905_1355
September Greenville County SC
Flower heads mostly solitary at the ends of branches, per Wildflowers of the Atlantic Southeast.
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JK Marlow jkm190905_1357
September Greenville County SC
Overlapping, spreading, narrow and pointed bracts with hairy margins, per Wildflowers of the Atlantic Southeast.
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JK Marlow jkm190905_1359
September Greenville County SC
Leaves thick, lanceolate, 8-14cm long, acuminate, serrate, scabrous above, per Vascular Flora of the Carolinas.
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JK Marlow jkm190905_1360
September Greenville County SC
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Richard and Teresa Ware rtw_h_strumosus_2
September
Rays usually 10+ in larger heads; anther appendages dark or reddish-brown, per Weakley's Flora (2018).