• Proposed
  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Tylopilus subniger Singer, J. García & L.D. Gómez

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Scientific name
Tylopilus subniger
Author
Singer, J. García & L.D. Gómez
Common names
 
IUCN Specialist Group
Mushroom, Bracket and Puffball
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Boletales
Family
Boletaceae
Assessment status
Under Assessment
Proposed by
Olivia Ayala Vàsquez
Assessors
Olivia Ayala Vàsquez
Editors
Ricardo Garcia-Sandoval, Roberto Garibay Orijel
Comments etc.
Anders Dahlberg, Jesús García Jiménez

Assessment Notes

This species can be considered vulnerable under the criteria C2i. Because it is distributed in cloud forest that has a decline continues observed, estimated and projected Ponce-Reyes et al. (2012) and its host Quercus oleoides has populations fragmented by its commercial importance. Currently Tylopilus subniger has approximately 30 potential locations, therefore, has fewer than 10.000 individuals, which will decrease.

Taxonomic notes

Pileus first black, later violet brown, dry and subtomentose. Hymenophore tubulose, pores and tubes white then more greyish or brownish. Stipe fuligineous or dark chocolate, rarely staining yellow at the base, the reticulation reaching down the to lower third of the stipe, more rarely visible only in the upper two thirds, generally whit pseudorrizha.
Context. Spores fusoid whit suprahilar depression or applanation, cystidia ampullaceous more rarely cilindrycal or clavate to fusoid.


Why suggested for a Global Red List Assessment?


Geographic range

The distribution San Jose and Cartago from Costa Rica and Huatusco and La Banderilla from Mexico. Altitud 1500-2300m.


Population and Trends

Mexico, (F. XAL)Veracruz, Rancho la Pomarrosa, Km. 4 al Suroeste de Banderilla
FJ.  Anell   11916 June 1984. Costa Rica, San José a few kms E of la Perla, about 2000m, June 1983, Gomez20627 (F), El Jardín, 8 june 1984, R. Singer   B-14555-a F (Type). Cartago: La chontla 17 june 1983, R. Singer   B-14387 (F). In recent dates 2016, 2017. Dra. Montoya has collected specimens in Quercus Oleides in Huatusco.

Population Trend:


Habitat and Ecology

Solitary. In cloud forest and under oak. Altitude 1500-2300m. presumably by ectomycorrhizal.

Temperate ForestSubtropical/Tropical Moist Montane Forest

Threats

Rancho la Pomarrosa, Km. 4 to the southwest of Banderilla, where the species was described by type is already very fragmented since there are currently crops and only patches remain and the species has not been found again in the mesophilic mountain forest. In Costa Rica it has been collected in Quercus oleoides and according to the iucn this species is almost threatened by economic importance


Conservation Actions

Site/area protectionSite/area management

Research needed

Population size, distribution & trendsHabitat trends

Use and Trade


Bibliography

Singer R, García J, Gómez LD (1991) The Boletineae of Mexico and Central America III. Nova Hedwigia, Beihefte 102:1-99.
Ponce-Reyes R, Reynoso-Rosales HV, Watson EMJ, VanDerWal J, Fuller AR, Pressey LR, Possingham PH (2012) Vulnerability of cloud forest reserves in Mexico to climate change. Nature Climatic Change. 2:448-452. DOI:10.1038/NCLIMATE1453
https://www.iucnredlist.org/species/194209/2304166


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted