A native grass; not just new to ME.

"The tall native grass growing along the bank on your block has been identified in Melbourne as Dichelachne hirtella, not even recorded for South Australia... so cherish that one... RB"

More here,

http://www.anbg.gov.au/cgi-bin/apx?taxon_id=64957

and here, which map does seem to have a record of it on the Flerieu Peninsula, hmmmm.
http://www.anbg.gov.au/cgi-bin/map/winmap?taxon_id=64957

http://tropicos.org/name/25557811

http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Dichelachne~hirtella


... still looking ... oh!

GOLD!

http://www.kew.org/data/grasses-db/www/imp02783.htm