Family - Indian Society of Weed Science

Habit:
Stem:
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Fruits:
118
Cyperus difformis L.
Common Name : Variable flatsedge
Family : Cyperaceae
An annual sedge, sometimes behaving as a
perennial, varies in height from 6-80 cm.
Smooth, triangular, slightly winged and 0.7-3.0
mm thick. The roots are numerous, fibrous and
reddish.
Smooth, (or slightly scabrid on the midrib and
margin), flat, linear, 5-25 cm long or often twothirds
of the plant height, 2-6 mm wide,
sometimes reduced to sheaths. Sheaths are
tubular, united, green to reddish-brown and
without leaf blades at the base.
Inflorescence consists of dense, globose,
umbellate heads, simple or compound, 5-15 mm
in diameter, with 10-60 stellately spreading
spikelets.
Nutlets, 0.6-0.8 mm long and 0.3-0.4 mm wide,
triangular, obovate-elliptic, yellowish-brown or
pale-brown, minutely papillose.
Weed ID Manual