Not sure what to select for habitat type.
I have chosen DD given the lack of records, but this species is rather conspicuous and reported for Queensland, Australia (general location only). The lack of records in Australia where search efforts are high and deforestation in Malaysia could point towards a threatened category but I hesitated to do so with so little information.
There are two isotype records for this species on GBIF.org from 2 different dates, but only one (from 1972) is mentioned in original article. I think record from 1973 originated from a typo as the corresponding voucher label was corrected to 1972.
Species changed names in “Revision of Malaysian Species of Boletales s.l. (Basidiomycota) Described by E.J.H. Corner (1972, 1974)”, but I couldn’t access the book so I’m not sure if any more records are mentioned there.
Phaeogyroporus hibiscus is a bolete known from Malaysia and Australia. There are very few documented observations of this species and it is not clear whether it is uncommon or under-recorded. Targeted search efforts are needed to estimate current population size and distribution, so the species is assessed as Data Deficient (DD).
Originally described as Boletus hibiscus, Phaeogyroporus hibiscus is the only remaining species in the Phaeogyroporus genus (Index Fungorum, 2023). However, its taxonomic placement may need further reviewing as most of the species originally assigned to this genus have since been transferred to Phlebopus. Moreover, Raghoonundon et al. (2021) argued that the reason for the transfer of this species from Boletus to Phaeogyroporrus rather than Phlebopus is not clear.
Why suggested for a Global Red List Assessment?
Known from the Bako National Park in Sarawak, Malaysia and Queensland, Australia (GBF, 2023).
Population and Trends
P. hibiscus was documented in 1972 in the Bako National Park in Sarawak, Malaysia (in two forested bays within the park) and in 1989 in Queensland, Australia (GBIF.org, 2023). In the original description of the species, Corner (1974) reported finding 150 fruitbodies in two sites within the Bako National Park and described them as large and bright brownish yellow. This suggests that the species is likely easy to detect, so the absence of records could indicate that it is now uncommon or confused with other similar species, especially in Australia where search efforts are higher. Without more recent records or targeted search efforts it is not possible to estimate population size and trends.
Population Trend: Uncertain
Habitat and Ecology
Found in seashore sand in forested bays, growing in circles and with Hibiscus tiliaceus, Dillenia suffuticosa, Planchonella sp. and Pandanus odoratissimus. (Corner, 1974)
The extensive deforestation in Malaysia and specifically in Sarawak (Global Forest Watch, 2023) may present a threat to this species.
Search efforts in known locations and in areas of potentially suitable habitat are needed to estimate population size and distribution.
TaxonomyPopulation size, distribution & trendsLife history & ecology