Hemarthria

Hemarthira altissima (Poir.) Stapf & C. E. Hubb.

Limpo Grass

Natural range: Africa

Recognition: Pencil-like raceme is flattened

Rottboellia similar but has hispid nodes and sheaths

Coelorachis similar but has flattened (vs. round) raceme

Florida status:  Escaped weed in wet areas, sometimes forming large stands