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Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
WEAKLEY'S FLORA (5/21/15):
Cenchrus setaceus FAMILY Poaceae
PLANTS NATIONAL DATABASE:
Pennisetum setaceum FAMILY Poaceae
Manual of the Grasses of the US (Hitchcock & Chase, 1950)
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JK Marlow jkm0409d_13
September Greenville County SC
Pennisetum's spikelets are surrounded by an involucre of bristles, per Manual of the Grasses of the United States.