Carolinas and Georgia

2737

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

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

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Helianthus giganteus   FAMILY Asteraceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-65-021:
Helianthus giganteus   FAMILY Asteraceae

 

COMMON NAME:
Tall Sunflower, Swamp Sunflower, Tuberous Sunflower, Giant Sunflower


map
To see a detailed map, click here

Look for it on bog edges, moist thickets, ditches, per Weakley's Flora

Forb
Perennial

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Common (uncommon in Mtns south of NC, rare in Coastal Plain south of VA)

 

...Wet ...Moist

LEAVES:
Simple
Mostly alternate, lowermost opposite
Petioles .3-1.5cm long

FLOWER:
Summer/Fall
Rays: Pale yellow
Disc: Yellow
Disc flowers bisexual & fertile/ Ray flowers pistillate but sterile
Inferior ovary

FRUIT:
Summer/Fall
Blackish/Brown
Achene

 

TO LEARN MORE about this plant, look it up in a good book!



Helianthus giganteus   FAMILY Asteraceae

Tall Sunflower, Swamp Sunflower, Tuberous Sunflower, Giant Sunflower