Native & Naturalized Plants of the Carolinas & Georgia


1678

Forb
Annual

Original distribution unclear, but probably native to eastern North America

Documented growing wild in GA NC SC

Common

Look for it in barnyards, pastures, bottomlands, other disturbed areas, per Weakley's Flora

map
To see a detailed map, click here

 

IS THE PLANT "ARMED"?
Leaf axils lack spines; fruits are beset with straight and hooked prickles

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 (10/20/20):
Xanthium chinense   FAMILY Asteraceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Xanthium strumarium var. glabratum   FAMILY Asteraceae

INCLUDED WITHIN Flora of North America
Xanthium strumarium

SYNONYMOUS WITH How many names for a beloved genus? -- Coalescent-based species delimitation in Xanthium (Asteraceae) (Tomasello, 2018)
Xanthium chinense

INCLUDED WITHIN The Biota of North America Program. BONAP (Kartesz, 2015)
Xanthium strumarium

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-03-002b:
Xanthium strumarium var. glabratum   FAMILY Asteraceae

INCLUDING Gray's Manual of Botany (Fernald, 1950)
Xanthium chinense

INCLUDING Gray's Manual of Botany (Fernald, 1950)
Xanthium globosum

INCLUDING Gray's Manual of Botany (Fernald, 1950)
Xanthium inflexum

 

COMMON NAME:
Common Cocklebur


Click or hover over the thumbnails to see larger pictures.

image of Xanthium chinense, Common Cocklebur

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_xaam2_001_lvd

        

image of Xanthium chinense, Common Cocklebur

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_xain_001_lvd

        

image of Xanthium chinense, Common Cocklebur

JK Marlow    jkm150226_737

February    Pickens County    SC

image of Xanthium chinense, Common Cocklebur

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 chinense, Common Cocklebur

JK Marlow    jkm130928_750

September    Spartanburg County    SC

image of Xanthium chinense, Common Cocklebur

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 chinense, Common Cocklebur

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 chinense, Common Cocklebur

Gill Newberry    gn10_x_strumarium

October