Concentrating on data only at this stage
Accuracy of genus name is in doubt. Needs DNA sequence data for the New Zealand species to compare with existing data available for the type species (C. guiaensis ex tropical America)
Known only from 3 collections from a single locality (Auckland, 1981, 1982, 1983) from New Zealand. On soil and decaying wood, under Leptospermum. Distinctive, 8 cm high.
All 3 PDD specimens known from a single location in the Waitakere Ranges, north-west of Auckland city, New Zealand.
On soil, possibly associated with Leptospermum spp. (Myrtaceae); potentially ectomycorrhizal?
Dark colour means fruitbody may be macroscopically cryptic. If its association with Leptspermum is obligate, this would likely assist survival of the fungal species as Leptspermum is now valued for honey production, and the Waitakere Ranges are protected. But overall forest is being modified by Kauri Dieback disease, caused by Phytophthora agathidicida. Being close to Auckland city’s expanding western suburbs, the species is also subject to potentially negative human activities.
Phylogenetic study to confirm genus placement. Two species of Cordierites have DNA sequences available. Based on the specimens sequenced (neither is the type), the species are not congeneric but probably in the same family (Cordieritidaceae).
Samuels, G.J.; Kohn, L.M. 1987 : Ascomycetes of New Zealand. 7. Some bizarre, inoperculate discomycetes. Sydowia 39: 202-216