Native & Naturalized Plants of the Carolinas & Georgia


1678

Forb
Annual

Original distribution unclear, probably native to the New World
Documented growing wild in GA NC SC

Common

Look for it on disturbed ground, roadsides, in pastures, barnyards, beaches, per Weakley's Flora

map
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full sun

LEAVES:
Simple
Alternate

FLOWER:
Summer/Fall
Staminate corollas greenish-brown
Unisexual
Staminate corollas 5-lobed; pistillate flowers without corollas
Inferior ovary

FRUIT:
Summer/Fall
Black
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):
Xanthium strumarium   FAMILY Asteraceae

GREATER THAN PLANTS NATIONAL DATABASE:
Xanthium strumarium var. glabratum   FAMILY Asteraceae

GREATER THAN VASCULAR FLORA OF THE CAROLINAS (1968) 179-03-002b:
Xanthium strumarium var. glabratum   FAMILY Asteraceae

GREATER THAN PLANTS National Database
Xanthium strumarium var. canadense

GREATER THAN (MISAPPLIED) Vascular Flora of the Carolinas (1968)
Xanthium strumarium var. strumarium

 

COMMON NAME:
Cocklebur


Click or hover over the thumbnails to see larger pictures.

image of Xanthium strumarium

JK Marlow    jkm150226_737

February    Pickens County    SC

image of Xanthium strumarium

JK Marlow    jkm150226_737b

February    Pickens County    SC

Phyllaries mostly hooked, the whole becoming a hard prickly perigynium (bur), per Flora of North America.

image of Xanthium strumarium

JK Marlow    jkm130928_750

September    Spartanburg County    SC

image of Xanthium strumarium

JK Marlow    jkm130928_750b

September    Spartanburg County    SC

Leaf blade broadly ovate to roughly orbicular, base cordate or nearly so, per Wildflowers of the Eastern United States.

image of Xanthium strumarium

Gill Newberry    gn10_x_cocklebur

October        

Female flowers enclosed by the involucre, forming a bur w hooked bristles, per Wildflowers of the Eastern United States.

image of Xanthium strumarium

Gill Newberry    gn10_x_strumarium

October