Cyperus entrerianus
woodrush flatsedge
Family
Cyperaceae
Leaf Arrangement
alternate
Leaf Type
simple
Leaf Shape
linear
Growth Form
forb
Flower Color
inconspicuous
Flower Month
July - December
Height (meters)
0.2 - 1.2
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
introduced
Lifespan
perennial
Growing Season
Warm season
Wetland Class
FACW
Prairie Coefficient of Conservatism
-1
Field Characters
Leaf bases purplish black. Base of plant usually deeply set in substrate and difficult to extract from soil. Stems obtusely triangular. Plants usually consist of 10 to 20 basally clumped stems, but the number of stems per plant may range from several to 100.
Natural History
Found in the gulf coast states of Alabama, Florida, Georgia, Louisiana, Mississippi, and Texas. An aggressive weed, C. entrerianus has dispersed and become common in the southeastern US. reports this species to be common in east Texas and south Louisiana and apparently highly correlated with rice culture.