• Proposed
  • Under Assessment
  • ENPreliminary Assessed
  • 4Assessed
  • 5Published

Craterellus albostrigosus C.K. Pradeep & K.B. Vrinda

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Scientific name
Craterellus albostrigosus
C.K. Pradeep & K.B. Vrinda
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Preliminary Assessed
Preliminary Category
Proposed by
Adam Liddle
James Westrip, Adam Liddle

Assessment Notes


Craterellus albostrigosus is currently only known from a single locality, the Jawaharlal Nehru Tropical Botanic Garden and Research Institute campus, in Kerala state, India, where it has been recorded fruiting on multiple occasions. As a botanic garden, it is assumed that this area is under a degree of protection from external threats and so the population there is assumed to be stable. Given this highly restricted known range the population size there is estimated to be very small, at 50-100 mature individuals. This would qualify the species as Endangered under criterion D.

The full distribution of the species is uncertain, and this could then have an impact on the potential final category and criteria. There is ongoing forest cover loss in the wider region (see World Resources Institute 2023), but this would not at be a rate to qualify the species as threatened under criterion A. However, if the population were to be found to be more widespread and in decline then it could qualify under criterion C, albeit the population size estimate would be larger (suspected to be in the low thousands). To counter this, the wider area does also include several protected areas, where the species could persist under protection, and the population size could be significantly larger (i.e. >10,000 mature individuals).

Taking everything into account the range of plausible categories C. albostrigosus is from Endangered to Least Concern. Thus the species cannot be listed as Data Deficient, as that would require the species to qualify for anything from Critically Endangered to Least Concern. Therefore, a precautionary position is taken given that it is currently only known from this single locality, and C. albostrigosus is assessed as Endangered. Given the uncertainty though, further survey work is strongly recommended.

Taxonomic notes

Why suggested for a Global Red List Assessment?

Chanterelle species

Geographic range

This species has only ever been recorded from the Jawaharlal Nehru Tropical Botanic Garden and Research Institute campus in Palode, Thiruvananthapuram District, Kerala, India, where it has been reported on multiple occasions (Bijeesh et al. 2018).

Population and Trends

As it is currently only known from within the Jawaharlal Nehru Tropical Botanic Garden and Research Institute campus, it is presumed to be under a degree of protection, and there have been multiple records of the species from this site (see Bijeesh et al. 2018). Therefore, it could be tentatively suspected that the population there is stable. The wider area both includes protected areas, and areas where there is ongoing forest cover loss (see World Resources Institute 2023). So if it is more widespread then its population trend is more uncertain.

With the large number of records from this single locality, the number of functional individuals there is estimated to be between five and ten. Using a scaling factor of 10 (per Dahlberg and Mueller 2011, for terrestrial fungi), this would then equate to 50-100 mature individuals at this site. Whether the species is truly restricted to this one site is uncertain, but if it were more widespread then the population size could be far larger than this (into the low thousands if only just more widespread into the surrounding area; and potentially >10,000 mature individuals if it were to occur even more widely into the protected area landscape).

Population Trend: Stable

Habitat and Ecology

This species occurs in tropical evergreen forest (Bijeesh et al. 2018), where it has been found as either solitary or scattered fruiting bodies on mud walls or earthworm mounds (Bijeesh et al. 2018). It has been recorded fruiting between June and November (Bijeesh et al. 2018). Collections were made near to Hopea parviflora (Bijeesh et al. 2018), so this could potentially be an ectomycorrhizal partner plant.

Subtropical/Tropical Moist Lowland Forest


Its presence within the Jawaharlal Nehru Tropical Botanic Garden and Research Institute campus does offer the species a degree of protection. However, there is ongoing forest cover loss in the wider area around this site (see World Resources Institute 2023), so if it were slightly more widespread than this site it could be impacted by such losses. That said, nearby areas also include several protected areas where, if the species occurs, it would exist under protection.

Conservation Actions

Research needed

Further research into this species’ full present wild distribution is required, and such work can also gain a greater insight into its potential association with Hopea parviflora.

Population size, distribution & trendsLife history & ecology

Use and Trade

The taste is described as ‘mild but not distinctive’ (Bijeesh et al. 2018), but whether it is widely consumed is unknown.

Food - human


Country occurrence

Regional Population and Trends

Country Trend Redlisted