Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus strumosus
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Roughleaf Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus strumosus
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Helianthus strumosus
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-019:
Helianthus strumosus FAMILY Asteraceae
INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus montanus
INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus saxicolus
INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus strumosus
COMMON NAME:
Roughleaf Sunflower, Paleleaf Woodland Sunflower, Paleleaf Sunflower
To see larger pictures, click or hover over the thumbnails.
JK Marlow jkm210824_2973
August Greenville County SC
Tall Pines Wildlife Management Area
Differs from H. tuberosus in its glabrous/glabrate stems and lack of tubers, per Flora of North America.
JK Marlow jkm190905_1352
September Greenville County SC
Tall Pines Wildlife Management Area
Plants rhizomatous, but not producing tubers, per Weakley's Flora (2018).
JK Marlow jkm190905_1354
September Greenville County SC
Tall Pines Wildlife Management Area
Heads with 8-15 yellow ray florets encircling tubular yellow disk florets, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
JK Marlow jkm190905_1355
September Greenville County SC
Tall Pines Wildlife Management Area
Flower heads mostly solitary at the ends of branches, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
JK Marlow jkm190905_1357
September Greenville County SC
Tall Pines Wildlife Management Area
Overlapping, spreading, narrow and pointed bracts with hairy margins, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
JK Marlow jkm190905_1359
September Greenville County SC
Tall Pines Wildlife Management Area
Leaves thick, lanceolate, 8-14cm long, acuminate, serrate, scabrous above, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus strumosus
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus strumosus
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Helianthus strumosus
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-019:
Helianthus strumosus
FAMILY
Asteraceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus montanus
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus saxicolus
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus strumosus
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".