Amphicarpum muhlenbergianum (Schult.) Hitchcock
Synonym: Amphicarpum floridanum Chapman
Natural range: Southeastern U.S., including Florida
Habitat: Wet areas: low pinewoods, marshes
Florida status: Abundant native species
Recognition: Readily recognized by its running-rhizomatous habit (sometimes filling large spaces) and leaf blades with a blue tinge, these with narrow white lines along the margins. Spikelets 6-7 mm long.
Note: This species produces subterranean spikelets in addition to those on the inflorescence. See discussion in "Grass Biology" for more on this species.