Native & Naturalized Plants of the Carolinas & Georgia


651

Forb
Perennial

Native to the Carolinas
Documented growing wild in - NC SC

Rare (primarily within 100 km of Charlotte, NC)

Look for it in clayey soils of woodlands and roadsides, in areas formerly with post oak-blackjack oak savannas, xeric oak-pine woodlands, or "Piedmont prairies," now primarily on mowed road or powerline rights-of-way, per Weakley's Flora

map
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full sun partial shade

LEAVES:
Simple
Lower opposite, upper alternate

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
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!



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

WEAKLEY'S FLORA (11/30/12):
Helianthus schweinitzii   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus schweinitzii   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 179-65-003:
Helianthus schweinitzii   FAMILY Asteraceae

 

COMMON NAME:
Schweinitz's Sunflower


Click or hover over the thumbnails to see larger pictures.

image of Helianthus schweinitzii

JK Marlow    jkm060928_017

September    York County    SC

Utility right-of-way

Flower heads less than 2" across with yellow ray and disk flowers, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.

image of Helianthus schweinitzii

JK Marlow    jkm060928_125

September    York County    SC

Utility right-of-way

image of Helianthus schweinitzii

Will Stuart    wil_3932516321_f2c6caba99

September    York County    SC

Blackjacks Heritage Preserve

8-15 ray florets; lobes of disc florets yellow, anthers dark brown to black, per Flora of North America.

image of Helianthus schweinitzii

JK Marlow    jkm0411f_18

November    York County    SC

Blackjacks Heritage Preserve

Leaves scabrous above, tomentose beneath, short-petiolate to sessile, per Vascular Flora of the Carolinas.