Photos courtesy of David Wilson.

http://www.aquagreen.com.au/plant_data/Aponogeton_euryspermus.html

Dave Wilson's comment to Graeme about his photo:

It from a river called "Coondillah Creek."

Coondillah Creek had some very nice plants: Glossostigma diandrum
Ceratopteris thalictroides
Vallisneria triptera
Eriocaulon setacium
Eriocaulon sp? (may be lividum)
Eriocaulon sp.? (dont know, may be depressum)
Pogostemon stellatus