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.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hean2_001_lvd
)
USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_hean2_007_lvd
)
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
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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_173
October Dorchester County SC
McAlhany Nature Preserve
)
JK Marlow jkm081009_177
October Dorchester County SC
McAlhany Nature Preserve
)
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).
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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
)
Richard and Teresa Ware rtw_h_angustifolius_3
October
)
Richard and Teresa Ware rtw_h_angustifolius_9
October
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
644
Forb
Perennial
Habitat: pine savannas, ditches, marshes, other wet habitats, per Weakley's Flora
Native to the Carolinas & Georgia
Common in GA, in Coastal Plain, & in SC Piedmont (rare in NC Mountains, uncommon elsewhere in GA-NC-SC)
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
LEAVES:
Simple
Lower opposite, upper alternate
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Purplish-red
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!
- All About South Carolina Wildflowers (Midgley, 1999) p169
- Atlantic Coastal Plain Wildflowers (Nelson, 2006) p174
- Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005) p094
- Gardening with Native Plants of the South (Wasowski & Wasowski, 1994, 2020) p168
- Gardening with the Native Plants of Tennessee (Hunter, 2002) p134
- Guide to the Wildflowers of SC (Porcher & Rayner, 2001) p268
- Newcomb's Wildflower Guide (Newcomb, 1977) p366
- Field Guide to the Rare Plants of Georgia (Chafin, 2007) p157
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p279
- Wildflowers of the Eastern United States (Duncan & Duncan, 1999) p122
- Wild Flowers of NC, 2nd edition (Justice, Bell, & Lindsey, 2005) p272
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p086
- Wildflowers of Tennessee (Carman, 2005) p301
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p350
- Wildflowers of the Southern Mountains (Smith, 1998) p191
- Wildflowers of the Sandhills Region (Sorrie, 2011) p323