Campanella gregaria was described as a new species from Western Australia by Bougher (2007) but Bougher (2017) suggested that it was possibly the same as Resupinatus merulioides (a species described by Redhead & Nagas (1987) from Japan); but this was awaiting confirmation. As far as I can determine, this has not yet been confirmed. In iNaturalist, some occurrences from Australia are listed as Campanella gregaria and others as Resupinatus merulioides but I think they should all be listed as Campanella gregaria until there is published information that they are identical to Resupinatus merulioides. For this reason, I changed the ID of my observation from Resupinatus merulioides to Campanella gregaria. As a result, I lost the research grade on my observation, and it was downgraded to Suborder Marasmiineae!
References:
Bougher, NL, 2007: The genus Campanella in Western Australia, Mycotaxon v.99, p. 327–335.
Bougher, NL, 2017: Fungi of the Perth region and beyond: a self-managed field book, Western Australian Naturalists’ Club (Inc.) Perth, Western Australia.
Redhead, SA and Nagasawa, E, 1987: Resinomycena japonica and Resupinatus merulioides, new species of Agaricales from Japan, Canadian Journal of Botany, v.65, p. 972–976.