Ctenium aromaticum

toothache grass
Family

Poaceae

Leaf Arrangement

alternate, basal

Leaf Type

simple

Leaf Shape

linear

Growth Form

graminoid

Flower Color

inconspicuous

Flower Month

June - August

Height (meters)

0.6 - 1.8

Milky Sap

No

Armed/Unarmed

Unarmed

Origin

native

Lifespan

perennial

Growing Season

Warm season


Wetland Class

FACW

Prairie Coefficient of Conservatism

8

Field Characters

No other grass in coastal Texas and Louisiana has a similar inflorescence. Sterile clumps can be distinguished with experience by the fibrous mat formed at the plants base by disintegrating leaves. Muhlenbergia expansa, a pineywoods species forms similar mats but has curly fibers and leaf blades up to 6 mm in width while the fibers of C. aromaticum are straight to gently curving and its leaves are less than 3 mm wide.

Animal Use

After a fire, cattle readily graze the herbage.

Natural History

Found from Louisiana to Florida and north to Virginia along the Coastal Plain. Older plants are unpalatable to cattle but regrowth after fire is readily grazed. The freshly dug roots of toothachegrass have a distinctive spicy odor. Its common name comes from the belief that it can relieve toothache. Chewing the roots does produce a numbing sensation in the tongue and gums. This species is generally associated with pineywoods and was only collected once from a prairie remnant in the pineywoods area.

Habitat

Savannas, bogs, and pinelands, wet pine barrens.