Cyperus iria ?

Cyperus iria ?;

ID request for a grass -reg : 6 posts by 3 authors. Attachments (1).
Kindly identify this grass collected from Sullia in Dakshina Kannada district of Karnataka.
I will be grateful if some one posts a picture of Actinoscirpus grossus.
This is Cyperaceae member
May I suggest a probability - Cyperus iria L.?
Not a grass but a sedge - Cyperaceae, probably Cyperus iria