This is a pigeon-hole for those mushrooms, with gills neither white nor cream, that present puzzles as far as identification is concerned. It seems a shame to discard such photos and, for at least some, it may be possible to suggest an identification in the future.
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 agaric (stem; gills not white/cream) is listed in the following regions:
Canberra & Southern Tablelands | Albury, Wodonga | Hume | Greater Brisbane
Places
Yackandandah, VIC