Phanopyrum gymnocarpon
cottonmouth grass, savannah-panicgrass, savannah panic grass, savannah panicum
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Family
Poaceae
Leaf Arrangement
alternate
Leaf Attachment
sheathing
Leaf Margin
entire
Leaf Type
simple
Leaf Shape
linear
Growth Form
graminoid, emergent aquatic, aquatic
Flower Color
inconspicuous
Flower Month
August - November
Height (meters)
1.0
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
native
Lifespan
perennial
Wetland Class
OBL
Wetland Coefficient of Conservatism
8
Field Characters
A robust fall-flowering grass forming extensive stands on wet sites. Stems falling over and rooting at the nodes. Leaves more than 1” wide, leaf blades with heart-shaped bases. Inflorescence terminal, consisting of a system of many spike-like panicle branches.
Habitat
Wet depressions or swales in bottomland hardwoods forests; cypress-tupelo swamps. Also in sunny wetlands such as roadside ditches.