This species is thought to possess only approximately 200 mature individuals in the wild, occurring throughout Australia and New Zealand. This species does not appear to be threatened in its wild populations, and appears to otherwise exist under preservation or within protected habitat. Therefore, this species is listed as EN under criterion D, due to its worrying population size, despite a lack of significant and immediate recorded threats to this species.
Why suggested for a Global Red List Assessment?
This species occurs primarily throughout New Zealand, but a single specimen has also been observed in recent years in Sherbrooke Forest, Australia. The majority of New Zealand specimens occur in the north of the country, however at least 5 occurrences are known from human observation from the south of New Zealand. Observations from New Zealand frequently place this species within native lowland podocarp forest, associated at times with celery pine and tea trees. Many preserved specimens of this species are maintained by the New Zealand Fungal and Plant Disease Collection.
Population and Trends
This species does not appear to be under significant threat or in decline, as it is thought to exist within habitat which is not significantly threatened, within protected habitat, or under preservation by the New Zealand Fungal and Plant Disease Collection. This species’ population is therefore thought to be stable. However, records of wild populations of this species are scarce. The number of mature individuals calculated from these records is approximately 200, based on guidelines established by Dahlberg and Mueller 2011 (geographic information is provided by gbif, citation needed).
Population Trend: Stable
Habitat and Ecology
This species is known to occurs throughout the native lowland podocarp forests of New Zealand. It has been observed from May 2018 - May 2020 growing on the rotting roots of these native trees, as well as on mounds of rotting epiphytes, and appear to have associated in at least one case with celery pine and tea trees from New Zealand.
There don’t appear to be any significant threats to this species throughout its range in New Zealand. The species of tea tree and celery pine (Leptospermum scoparium and Phyllocladus trichomanoides respectively), thought to be associated with this species of fungus on at least one occasion in New Zealand do not show signs of decline, and are listed as LC. The known specimen in Sherbrooke Forest, Australia, appears to exist under protection of the Dandenong Ranges National Park and is therefore unlikely to be threatened.
This species does not appear to be significantly under threat across its native range, however its estimated small population size is of great concern. This species should be closely monitored in its known range, which is not thought to be threatened at this time, and protected in order to ensure its stability.
Little further research is needed for this species, however confirming its existence inside the Dandenong Ranges National Park would be useful in confirming a lack of threat to this species. Its small population size is worrying, and so further research into its distribution is particularly important.