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  • Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
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Hydnodon thelephorus (Lév.) Banker

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Scientific name
Hydnodon thelephorus
(Lév.) Banker
Common names
IUCN Specialist Group
Mushroom, Bracket and Puffball
Assessment status
Under Assessment
Proposed by
Joaquin Cifuentes
Joaquin Cifuentes
Comments etc.
Anders Dahlberg, Danny Newman

Assessment Notes

Taxonomic notes

Hydnum thelephorum Lév., Annls Sci. Nat., Bot., sér. 3 2: 204 (1844)
Pseudohydnum thelephorum (Lév.) Lloyd, Mycol. Writ. 5: 859 (1919)
Trechispora thelephora (Lév.) Ryvarden, Syn. Fung. (Oslo) 15: 32 (2002))

Why suggested for a Global Red List Assessment?

Hydnodon thelephorus is a peculiar member of Hydnodontaceae Jülich (some consider it phylogenetically a basal member of the large genus Trechispora which eventually would possibly be splitted). The micromorphology of H. thelephorus (= T. thelephora) corresponds very well to the genus Trechispora, but the pileate-stipitate morphology of its basdiomata is unusual for this usually resupinate genus. It is mainly a neotropical species but Interestingly extending its distribution up to southeastern USA. Soil conditions seem to drive its distribution.

LC under IUCN criteria

Geographic range

Mostly in the neotropics, Hydnodon thelephorus (Lév.) Banker has been found in the Bahamas, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, French Guyana, Galapagos Islands, Jamaica, Mexico, Panama, Trinidad and Tobago, and very importantly up to Carolina, southeastern USA!!

Population and Trends

50 known localities, most finds in the neotropics, very few in USA.

Population Trend: Uncertain

Habitat and Ecology

Recorded mainly in humid lowland tropical areas in the neotropics, but a few in deciduous southeastern North American forests. Saprotroph only in primary vegetation and under certain soil conditions (yet to be determined).

Subtropical/Tropical Moist Lowland Forest


Currently it remains only 56% of humid tropical forests, in some regions mostly phragmented and highly degraded (Koleff et al, 2012; Laurence, 2010). 25% out of world forests are humid tropical forests and harbor the richest biological diversity in the terrestrial world (Asner et al., 2009); America has 40% of humid tropical forests worldwide.

Shifting agricultureWood & pulp plantationsSmall-holder grazing, ranching or farmingAgro-industry grazing, ranching or farmingOil & gas drillingUnintentional effects: subsistence/small scale (species being assessed is not the target) [harvest]Fire & fire suppressionSoil erosion, sedimentation

Conservation Actions

Site/area protection

Research needed

We need to know the exact sizes of individuals and populations and how soil conditions determine its phragmented distribution

Population size, distribution & trendsLife history & ecologyPopulation trends

Use and Trade


Albee-Scott S, Kropp BR, 2010. A phylogenetic study of Trechispora thelephora. Mycotaxon 114, pp. 395–399 doi: 10.5248/114.395

Cifuentes J, Patiño-Conde V, Villegas M, García-Sandoval R, Valenzuela R., 2005 First record of Hydnodon thelephorus from Belize, Dominican Republic, Mexico and new data on its morphology and distribution. Mycotaxon 91: 27-34

Coker WC, AH Beers 1951. The stipitate Hydnums of Eastern Unites States. The University of North Carolina Press,Chapel Hill, N. Carolina, USA, 211 pp

Koleff, P., Urquiza-Haas, T., Contreras, B.,2012. Conservation priorities for tropical forests in Mexico: Reflections about their conservation status and management. Ecosistemas 21(1-2):6-20. http://www.revistaecosistemas.net/articulo.asp?Id=707

Larsson KH, 2007. Re-thinking the classification of corticioid fungi. Mycological Research 11: 1040-1063.

Laurance WF, 1999. Reflections on the tropical deforestation crisis. Biological Conservation 91:109-117.

Ryvarden, L. 2002. A note on the genus Hydnodon. Synopsis Fungorum. 15:31-33

Country occurrence

Regional Population and Trends

Country Trend Redlisted