Cyperus entrerianus, deeprooted sedge,
is native to temperate South America. Apparently introduced into the United
States with rice agriculture, this invasive weed has dispersed thoughout much
of the lower coastal plain of the southeastern United States, where it ranges
from coastal Georgia and northern Florida westward into eastern Texas. It
was first reported in the United States in 1990 (Sida 14:69-77). Deeprooted
sedge forms extensive stands in ditches, coastal prairies, fields and disturbed
sites in low flatwoods. Inflorescence shown above.
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