Roy E. Halling

Curator of Mycology, Institute of Systematic Botany

Ph.D., University of Massachusetts
Amherst (1980)
"The genus Collybia in New England"
Expertise: Fungi (Mushrooms and related fungi)

Profile

Major research emphasis is on the classification, systematics, biogeography, and diversity of mushrooms. Mushrooms are important in the world's ecosystems as primary decomposers, litter binders, and nutrient recyclers. In addition, they form obligate and necessary root symbioses with forest trees to maintain ecosystem health and integrity. Explorations and inventory of fungal diversity have required field work around the world in northern and southern temperate zones as well as the neo- and paleotropics. Continuing field efforts in these areas have added substantially to general investigations on tropical and temperate fungi. Critical laboratory analyses are coupled with the field work. Currently, investigations are emphasizing the taxonomy, phylogeny, mycorrhizal relationships, and biogeography of the Boletineae (a suborder of porcini-like mushrooms). International collaboration with other specialists is underway on systematics, biogeography and phylogeny of Bolete mushrooms with particular emphasis in Australia and SE Asia.

Selected Publications

Roy Halling, R.E., M. Nuhn, T. Osmundson, N. Fechner, J. Trappe, K. Soytong, D. Arora, D. Hibbett, M. Binder. 2012.
Affinities of the Boletus chromapes group to Royoungia and the description of two new genera, Harrya and Australopilus.
Australian Systematic Botany 25: 418-431.

Halling, R.E., M. Nuhn, N.A. Fechner, T.W. Osmundson, K. Soytong, D. Arora, D. S. Hibbett, M. Binder. 2012.
Sutorius: a new genus for Boletus eximius.
Mycologia 104: 951-961.

Neves M.A., M. Binder, R.E. Halling, D. Hibbett,, K. Soytong. 2012.
The phylogeny of selected Phylloporus species, inferred from NUC-LSU and ITS sequences, and descriptions of new species from the Old World.
Fungal Diversity 55: 109-123.

Halling, R.E., N.A. Fechner. 2011.
Heimioporus (Boletineae) in Australia.
Australasian Mycologist 29: 47-51.

Halling, R.E., N.A. Fechner. 2011.
Toward a concept of Boletellus ananiceps.
Fungmap Newsletter 42: 3-4 (plus color figures).

Tulloss, R.E., R.E. Halling, G.M. Mueller. 2011.
Studies in Amanita (Amanitaceae) of Central America. 1. Three new species from Costa Rica and Honduras.
Mycotaxon 117: 165-205.

Dentinger, B.T.M., J.F. Ammirati, E.E. Both, D.E. Desjardin, R.E. Halling, T.W. Henkel, P.-A. Moreau, E. Nagasawa, K. Soytong, A.F. Taylor, R. Watling, J.-M. Moncalvo, D.J. McLaughlin. 2010.
Molecular phylogenetics of porcini mushrooms (Boletus section Boletus).
Molecular Phylogenetics & Evolution 57(3): 1276-1292.

Neves, M.-A., R. E. Halling. 2010.
Study on species of Phylloporus. I - Neotropics and North America.
Mycologia 102: 923-943.

Osmundson, T.W., R.E. Halling. 2010.
Tylopilus oradivensis sp. nov.: a newly described member of the Tylopilus balloui complex from Costa Rica.
Mycotaxon 113: 475-483.

Fulgenzi, T.D., R.E. Halling, T.W. Henkel. 2010.
Fistulinella cinereoalba sp. nov. and new distribution records for Austroboletus from Guyana.
Mycologia 102: 224-232

Neves, M.-A., T.W. Henkel, R.E. Halling. 2010.
Phylloporus colligatus sp. nov., a new gilled bolete from Guyana.
Mycotaxon 111: 143-148.

Halling, R.E. and B. Ortiz-Santana. 2009.
A revision of Boletellus sect. Ixocephali.
Mycological Progress 8:237-244.

Ortiz-Santana, B. and R.E. Halling. 2009.
A new species of Leccinum (Basidiomycota, Boletales) from Belize.
Brittonia 61: 172-174.

Guzmán, G., E. Horak, R.E. Halling, F. Ramírez-G. 2009.
Further studies on Psilocybe from the Caribbean, Central America and South America, with descriptions of new species and remarks to new records.
Sydowia 61: 215-242.

Mayor, J.R., T.D. Fulgenzi, T.W. Henkel, R.E. Halling. 2008.
Boletellus piakaii sp. nov. and a new distribution record for Boletellus ananas var. ananas from Guyana.
Mycotaxon 105: 387-398.

Fulgenzi, T.D., J.R. Mayor, T.W. Henkel, R.E. Halling. 2008.
New species of Boletellus from Guyana.
Mycologia 100: 490-495.

Halling, R.E., T.W. Osmundson, M.A. Neves. 2008.
Pacific boletes: Implications for biogeographic relationships.
Mycological Research 112: 437-447.

Hughes, K.W., R.H. Petersen, J.L. Mata, N.V. Psurtseva, A.E. Kovalenko, O.V. Morozova, E.B. Lickey, J. Cifuentes Blanco, D.P. Lewis, E. Nagasawa, R.E. Halling, S. Takehashi, M.C. Aime, T. Bau, T. Henkel. 2008.
Megacollybia (Agaricales).
Report of the Tottori Mycological Institute 45: 1-57.


Ammirati, J., S. Garnica, R. E. Halling, M. Mata, G. M. Mueller, J. Carranza. 2007.
New Cortinarius species associated with Quercus and Comarostaphylis in Costa Rica.
Canadian Journal of Botany 85: 794-812.



Osmundson, T. W., R. E. Halling, H. C. den Bakker. 2007.
Morphological and molecular evidence supporting an arbutoid mycorrhizal relationship in the Costa Rican páramo.
Mycorrhiza 17: 217-222.



Halling, R. E., T. J. Baroni, M. Binder. 2007.
A new genus of Boletaceae from eastern North America.
Mycologia 99: 310-316.



Mueller, G.M., J.P. Schmit, P.R. Leacock, B. Buyck, J. Cifuentes, D.E. Desjardin, R.E. Halling, K. Hojortstam, T. Itturriaga, K-H. Larsson, D.J. Lodge, T.W. May, D. Minter, M. Rajchenberg, S. A. Redhead, L. Ryvarden, J.M. Trappe, R. Watling, Q-X. Wu. 2006.
Global Diversity and Distribution of Macrofungi.
Biodiversity & Conservation 16: 37-48.



Halling, R. E., T. W. Osmundson, M. A. Neves. 2006.
Austroboletus mutabilis sp. nov. from northern Queensland.
Muelleria 24: 31-36.



Mueller, G.M., R.E. Halling, J. Carranza, M. Mata, J.P. Schmit. 2006.
Saprotrophic and ectomycorrhizal macrofungi of Costa Rican oak forests. p 55-68. In: M. Kappelle (ed.). Ecology and Conservation of Neotropical Montane Oak Forests. Ecological Series, Vol. 185. Springer. Heidelberg.



Halling, R.E. and G.M. Mueller. 2005.
Common Mushrooms of the Talamanca Mountains, Costa Rica.
New York Botanical Garden Press, Bronx. 195 p.



Halling, R. E. and M. Mata. 2004 (2005).
Boletus flavoruber, un nouveau bolet du Costa Rica.
Bull. Soc. Mycol. France 120: 257-262.



Mata, J. L., R. E. Halling, K. H. Hughes, R. H. Petersen. 2004.
Rhodocollybia (Agaricales) in neotropical montane forests.
Mycological Progress 3: 337-351.



Halling, R. E., M. Mata, and G. M. Mueller. 2004.
Three new boletes for Costa Rica.
Mem. New York Bot. Gard. 89: 141-147.



Halling, R. E. and G. M. Mueller. 2003.
Leccinum (Boletaceae) in Costa Rica.
Mycologia 95: 488-499.



Halling, R. E. and G. M. Mueller. 2002.
Agarics and boletes of Neotropical oakwoods.
In: Tropical Mycology, Watling, R., J. C. Frankland, A. M. Ainsworth, S. Isaac, and C. H. Robinson, eds. CABI Publishing, UK, p. 1-10.



Halling, R. E. 2001.
Ectomycorrhizae: Co-evolution, significance and biogeography.
Ann. Missouri Bot. Gard. 88: 5-13.



Baroni, T.J. and R.E. Halling. 2000.
Some Entolomataceae (Agaricales) from Costa Rica.
Brittonia 52: 121-135.



Halling R.E. 1999.
New Leccinums from Costa Rica.
Kew Bull. 54: 747-753.

Halling, R.E., G.M. Mueller, and M.J. Dallwitz. 1998 onwards.
Leccinum and Phylloporus in Costa Rica: Descriptions, Illustrations, Identification, and Information Retrieval.
Version: 20 February 2000.



Mueller, G.M. and R.E. Halling. 1995.
Evidence for High Biodiversity of Agaricales (Fungi) in Neotropical Montane Quercus Forests.
In: S. Churchill, H. Balslev, E. Forero, and J.L. Luteyn, (eds.) Biodiversity and Conservation of Neotropical Montane Forests. New York Botanical Garden, Bronx.


Publication Format