OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus atrorubens   FAMILY Asteraceae   Go to FSUS key


SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus atrorubens   FAMILY Asteraceae

SYNONYMOUS WITH Flora of North America
Helianthus atrorubens

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-005:
Helianthus atrorubens   FAMILY Asteraceae

INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus atrorubens

 

COMMON NAME:
Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower


         To see larger pictures, click or hover over the thumbnails.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_heat_001_lvd

        

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm060528_002

May    Greenville County    SC

Tall Pines Wildlife Management Area

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm120728_984

July    Abbeville County    SC

Parson's Mountain Recreation Area

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm190726_0167

July    Transylvania County    NC

DuPont State Forest

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm190726_0169

July    Transylvania County    NC

DuPont State Forest

Related to the Ozarkian H. silphioides [Rosinweed Sunflower], per Weakley's Flora (2022).

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm0408j_31

August    Oconee County    SC

Flowers have reddish disk and are at the end of long naked branches, per Wildflowers of the Southern Mountains.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm0508g_26

August    Greenville County    SC

Tall Pines Wildlife Management Area

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm120812_360

August    Greenville County    SC

Ashmore Heritage Preserve

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm200808_6913

August    Transylvania County    NC

DuPont State Forest

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm210807_2537

August    Transylvania County    NC

DuPont State Forest

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm210812_2636

August    Transylvania County    NC

DuPont State Forest

Noticeably stiff hairs & stiff hairy leaves.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm080914_014

September    Greenville County    SC

Ashmore Heritage Preserve

Phyllaries broadly ovate to oblong, apices obtuse to acute, occ. mucronate, per Flora of North America.


click here to see other plants that look similar to this COMPARE involucral bracts of Sunflowers

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm120908_369b

September    Greenville County    SC

Helianthus disc flowers have styles that are bifurcate [two-forked], per www.missouriplants.com

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm180905_4570

September    Greenville County    SC

The disc florets mature from the outside in [centripetally].

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm180906_4605

September    Greenville County    SC

This is the same flower head, one day later.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm210903_3321

September    Greenville County    SC

Tall Pines Wildlife Management Area

Leaves basally disposed, the few leaves of the lower stem reduced upward, per Weakley's Flora (2012).

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    jkm220909_9832

September    Transylvania County    NC

DuPont State Forest

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

Richard and Teresa Ware    rtw_h_atrorubens_2b

September        

Disk flowers red or purple (at least in part), per Weakley's Flora.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    s040901_b

September    Greenville County    SC

Roadside

Leaves rhombic to triangular-ovate, pubescent and scabrous on both sides, per Vascular Flora of the Carolinas.

image of Helianthus atrorubens, Purple-disk Sunflower, Hairy Wood Sunflower, Appalachian Sunflower

JK Marlow    s040901_c

September    Greenville County    SC

Roadside

Petiole often > 1/3 as long as the blade, broadly winged toward the blade, per Weakley's Flora.

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus atrorubens   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus atrorubens   FAMILY Asteraceae

SYNONYMOUS WITH Flora of North America
Helianthus atrorubens

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-005:
Helianthus atrorubens   FAMILY Asteraceae

INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus atrorubens

 

Find by SCIENTIFIC NAME:

645

Forb
Perennial

Native to the Carolinas & Georgia

Common (rare in GA Coastal Plain)

Habitat: Dry soils of rocky, sandy, or clayey woodlands and roadbanks, per Weakley's Flora

map
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
Basal & opposite (reduced upward)

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!



 


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