Swedish to English Other Environment & Ecology starrtuvor

Hello

I've got a number of hits but none of them in a dictionary unfortunately

I vissa partier stöter du på sumpskog med gran och björk samt höga ***starrtuvor*** som tillsammans med björk- och videbuskar ibland bildar svårframkomliga snår

I have also found pictures such as

http://docplayer.se/docs-images/17/140202/images/13-0.jpg

but there is about as much chance of me recognising a species of rush as of me going to the moon :(

Can anyone bail me out pleeeaasseee

Thanks