2909

Forb
Perennial

Native: north & west of the Carolinas & Georgia

Documented growing wild in - - -

Rare

Look for it in prairies, limestone barrens, calcareous glades, also sometimes cultivated (including outside of its native distribution), per Weakley's Flora

To see a detailed map, click here

 

...Variable

LEAVES:
Simple: Pinnately divided
Alternate

FLOWER:
Summer/Fall
Rays: Yellow
Disc: Yellow
Disc flowers functionally staminate/ Ray flowers pistillate & fertile
Flower heads with 27-38 ray flowers, notched at apex
Inferior ovary

FRUIT:
Summer/Fall
Achene

 

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

• All About South Carolina Wildflowers p259
• Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians p375

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

WEAKLEY'S FLORA (10/20/20):
Silphium laciniatum   FAMILY Asteraceae

INCLUDING PLANTS NATIONAL DATABASE:
Silphium laciniatum var. laciniatum   FAMILY Asteraceae

INCLUDING PLANTS National Database
Silphium laciniatum var. robinsonii