Botanical name Pyrossia rupestris
A common name Horseshoe Felt Fern
All of these Pyrossia rupestris are growing on Syzygium floribundum on a south facing hillside.
I can only guess this Pyrossia rupestris had good year, it really hadn't stopped raining for most of the last 6 months or so when this photo was taken. These are fertile fronds, the round ones above are sterile fronds.