Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus heterophyllus
FAMILY
Asteraceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Savanna Sunflower at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus heterophyllus
FAMILY
Asteraceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 19-20-21 (2006)
Helianthus heterophyllus
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-006:
Helianthus heterophyllus FAMILY Asteraceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus heterophyllus
COMMON NAME:
Savanna Sunflower, Variable-leaf Sunflower
To see larger pictures, click or hover over the thumbnails.
)
Will Stuart wil_heterophy220925_3366
September Craven NC
Croatan National Forest
Erect nearly leafless stems topped by dark-centered flower heads that can be 4" wide, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
)
Will Stuart wil_heterophy220925_3369
September Craven NC
Croatan National Forest
Most leaves less than 6" long and borne in a persistent tuft at the base of the plant, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
)
Will Stuart wil_heterophyl220925_3361
September Craven NC
Croatan National Forest
A few leaves may extend a short ways up the stem; all leaves rough to the touch (sandpaperish), per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
)
Will Stuart wil_heterophyl220925_3372
September Craven NC
Croatan National Forest
Ray flowers bright yellow & angled upwards forming a bowl. Disc flowers numerous & reddish-brown. — Will Stuart
)
Will Stuart wil_heterophyl220925_3384
September Craven NC
Croatan National Forest
Note the small, paired stem leaves beneath the flowers. — Will Stuart
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Helianthus heterophyllus
FAMILY
Asteraceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Helianthus heterophyllus
FAMILY
Asteraceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 19-20-21
Helianthus heterophyllus
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-006:
Helianthus heterophyllus
FAMILY
Asteraceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Helianthus heterophyllus
3160
Forb
Perennial
Habitat: Wet pine savannas, seepage bogs, per Weakley's Flora
Native to the Carolinas & Georgia
Uncommon (rare in GA)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple
Basal & opposite (reduced upward)
FLOWER:
Summer/Fall
Rays: Yellow
Disc: Purplish-red
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!
- Atlantic Coastal Plain Wildflowers (Nelson, 2006) p176
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p272
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p387
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