Spring Fieldcap - Agrocybe praecox
Agrocybe arenicola, A. cylindrica, A. limonia, A. mullauna, A. neocoprophila, A. olida, A. parasitica (large pileus, well-developed annulus, growing on trees in wet forest), A. pediades, A. praecox(common on wood chip mulch, pileus often cracking with age), A. semiorbicularis and A. tunicola. All the above are species occurring in Australia
https://data.rbg.vic.gov.au/dev/fungikeys/funkey/key/Funkey - Key to the Agarics of Australia/Media/Html/Fact Sheets/Agrocybe.htm
''Agrocybe praecox'' is a species of brown-spored edible mushroom which appears early in the year in woods, gardens and fields. According to modern taxonomic analysis it is just one of a cluster of closely similar species which are often referred to as the ''Agrocybe praecox'' complex. It is found in Europe, North Africa and North America.
