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, Schweinitz's Sunflower

JK Marlow    jkm190802_0540

August    Greenville County    SC

In cultivation

Phyllaries reflexed or loose, lanceolate or lance-ovate, acute to acuminate, per Flora of North America.


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

image of Helianthus schweinitzii, Schweinitz's Sunflower

JK Marlow    jkm190802_0541

August    Greenville County    SC

In cultivation

image of Helianthus schweinitzii, Schweinitz's Sunflower

JK Marlow    jkm190802_0542

August    Greenville County    SC

In cultivation

image of Helianthus schweinitzii, Schweinitz's Sunflower

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, Schweinitz's Sunflower

JK Marlow    jkm060928_125

September    York County    SC

Utility right-of-way

image of Helianthus schweinitzii, Schweinitz's Sunflower

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, Schweinitz's Sunflower

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.