Some genera of polypores produce fruitbodies that grow flat against their woody substrate. Identification from a photo can be difficult or even impossible and this is a pigeon-hole for such polypores that are white(ish).
The zz is there simply to force this group to the end of the alphabetic list of genera/species, since this category would be of no relevance to most users of Canberra Nature Map.
zz flat polypore - white(ish) is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | South Coast
Maps
Bermagui State Forest Bruce Ridge Bruce Ridge to Gossan Hill Cooma North Ridge Reserve Flea Bog Flat, Bruce Gorman Road Bush Reserve, Goulburn Gossan Hill Goulburn Mulwaree Council Narrawallee Bushcare Narrawallee Foreshore Reserves Walking Track Stony Creek Nature Reserve Umbagong District ParkPlaces
Bermagui, NSW Goulburn, NSW Narrawallee, NSW