Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus angustifolius
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Narrowleaf Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus angustifolius
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America
Helianthus angustifolius
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-002:
Helianthus angustifolius FAMILY Asteraceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus angustifolius
COMMON NAME:
Narrowleaf Sunflower, Swamp Sunflower
To see larger pictures, click or hover over the thumbnails.
JK Marlow jkm120922_097
September Greenville County SC
SC Native Plant Society Plant Sale
Ray flowers 8-21, narrow; disk purple, flattened, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
JK Marlow jkm120922_101
September Greenville County SC
SC Native Plant Society Plant Sale
Leaves densely pubescent (but not tomentose) beneath, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
JK Marlow jkm120922_103
September Greenville County SC
SC Native Plant Society Plant Sale
Involucral bracts in several series, lanceolate to linear, acuminate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
COMPARE
involucral bracts of Sunflowers
JK Marlow jkm081009_030
October Dorchester County SC
Leaves narrow, sessile, w rough surfaces & revolute (curled under) margins, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
JK Marlow jkm081009_031
October Dorchester County SC
Heads on long stalks, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
JK Marlow jkm081009_178
October Dorchester County SC
McAlhany Nature Preserve
Plants 3-6' tall with a purplish to greenish herbaceous stem, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
JK Marlow jkm161001_822
September Chesterfield County SC
Carolina Sandhills National Wildlife Refuge
JK Marlow jkm161001_831
September Chesterfield County SC
Carolina Sandhills National Wildlife Refuge
JK Marlow jkm161001_832
September Chesterfield County SC
Carolina Sandhills National Wildlife Refuge
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus angustifolius
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus angustifolius
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America
Helianthus angustifolius
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-002:
Helianthus angustifolius
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus angustifolius