Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus hirsutus
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Hairy Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus hirsutus
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Helianthus hirsutus
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-012:
Helianthus hirsutus FAMILY Asteraceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus hirsutus
COMMON NAME:
Hairy Sunflower, Rough Sunflower
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_hehi2_001_lvd
)
JK Marlow jkm230531_3591
May Greenville County SC
Tall Pines Wildlife Management Area
)
JK Marlow jkm140711_759760
July Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140711_768b
July Greenville County SC
Swamp Rabbit Trail
Stem hirsute. Phyllaries lanceolate, usually loose, spreading, not reflexed, per Flora of North America.
COMPARE
involucral bracts of Sunflowers
)
Richard and Teresa Ware rtw_h_hirsutus_hairy_7
July
Leaves with 3 primary veins from the base, coarsely hairy on both sides, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
)
Richard and Teresa Ware rtw_h_hirsutus_hairy_s
July
Ray florets 10-15. Disc florets' lobes yellow; anthers dark brown or black, per Flora of North America.
)
JK Marlow jkm090808_011
August Floyd County GA
Leaves truncate to broadly rounded at base, shortly but distinctly petiolate, per Weakley's Flora.
COMPARE
leaves of Hairy Sunflower and Woodland Sunflower
)
JK Marlow jkm140804_365
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140804_366
August Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140804_367
August Greenville County SC
Swamp Rabbit Trail
Leaves thick, scabrous above, pubescent at least on the veins beneath, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm140822_923
August Greenville County SC
Swamp Rabbit Trail
Leaves triplinerved, with a prominent lateral pair of veins near the base, per Weakley's Flora (2012).
)
JK Marlow jkm230805_4709
August Greenville County SC
Tall Pines Wildlife Management Area
Leaves similar to H. divaricatus, but rough on upper surface, short-petioled, per Wildflowers of the Southern Mountains (Smith, 1998).
)
JK Marlow jkm230805_4710
August Greenville County SC
Tall Pines Wildlife Management Area
)
Richard and Teresa Ware rtw_helianthus_hirsutus_c
September
)
JK Marlow jkm141023_245
October Greenville County SC
Swamp Rabbit Trail
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus hirsutus
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus hirsutus
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Helianthus hirsutus
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-012:
Helianthus hirsutus
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus hirsutus
649
Forb
Perennial
Habitat: woodlands and other sunny or semi-sunny habitats, per Weakley's Flora
Native to the Carolinas & Georgia
Common (uncommon in NC) (rare in Coastal Plain)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Opposite
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Inferior ovary
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
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) p172
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p268
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p299
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p087
- Wildflowers of Tennessee (Carman, 2005) p302
- Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005) p352
- Wildflowers of the Southern Mountains (Smith, 1998) p192
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
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