Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA (4/24/22):
Helianthus schweinitzii
FAMILY
Asteraceae
NEW! Click to go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Schweinitz's Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus schweinitzii
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America
Helianthus schweinitzii
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-003:
Helianthus schweinitzii
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus schweinitzii
COMMON NAME:
Schweinitz's Sunflower
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm060928_017
September York County SC
Utility right-of-way
)
JK Marlow jkm060928_125
September York County SC
Utility right-of-way
)
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.
)
Will Stuart wil_schweinileafstem_1177
September Union County NC
Leaves are slender, single veined, and very rough to the touch. — Will Stuart
)
Will Stuart wil_schweinitzgroup_1547
September Union County NC
Flower heads less than 2" across with yellow ray and disk flowers, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
)
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.
WEAKLEY'S FLORA (4/24/22):
Helianthus schweinitzii
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus schweinitzii
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America
Helianthus schweinitzii
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-003:
Helianthus schweinitzii
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus schweinitzii
651
Forb
Perennial
Native to the Carolinas
Rare (occurring primarily within 100 km of Charlotte, NC)
Habitat: 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
NEW! Click here to see a map from Weakley's Flora of the Southeastern US showing range and abundance.
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: 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!
- Guide to the Wildflowers of SC p218
- Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont p382