top of page

My main expertise is in all aspects of systematics, taxonomy, evolution, and phylogenetics/ phylogenomics of fungi. The most recent focus of my research has been on using systematics, phylogenetics/phylogenomics, genomics, and metabolomics to predict ecological functions and biological activity of fungi found in natural phytobiomes, with emphasis in biological control and sustainable agriculture. I have also delved into investigating the role of fungi in animal microbiomes. 



BSc in Forestry


Instituto Tecnológico de Costa Rica, Cartago, Costa Rica

PhD in Plant Pathology


Department of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania, U.S.A. 


Associate Professor of Microbiology

October 2022 - present

Department of Natural Sciences, Bowie State University, Bowie, Maryland

Visiting Scientist

June 2021 - present

U.S. Department of Agriculture, Agricultural Research Service, Mycology and Nematology Genetic Diversity and Biology Laboratory. Beltsville, Maryland.

Associate Professor of Mycology

August 2013 - present

(on leave since 2021)

School of Biology, and Natural Products Research Center (CIPRONA), University of Costa Rica (UCR). San José, Costa Rica.

Associate Professor

May 2013 - May 2019

Department of Plant Sciences and Landscape Architecture, University of Maryland, College Park, Maryland, U.S.A.

Assistant Professor

May 2008- May 2013

Department of Plant Sciences and Landscape Architecture, University of Maryland, College Park, Maryland, U.S.A.

Assistant Professor

July 2005 - May 2008

Department of Biology, Howard University, Washington D.C., U.S.A.

Postdoctoral Research Associate

October 2003 - July 2005

Department of Plant Pathology & Plant-Microbe Biology Section, Cornell University, Ithaca, New York, U.S.A.

Graduate Research Assistant

July 1998 - August 2003

Department of Plant Pathology, The Pennsylvania State University, University Park, Pennsylvania, U.S.A.


(*Graduate student; **Post-doc; or ***undergraduate student supervised by P. Chaverri)


Books and Monographs:

  1. Salgado-Salazar, C.*, Rossman, A.Y., Chaverri, P. 2016. The genus Thelonectria (Nectriaceae, Hypocreales, Ascomycota) and closely related species with cylindrocarpon-like asexual states. Fungal Diversity 80: 411–455. (Monograph)

  2. Hirooka, Y.**, Rossman, A.Y., Samuels, G.J., Lechat, C., Chaverri, P. 2012. A monograph of Allantonectria, Nectria, and Pleonectria (Nectriaceae, Hypocreales, Ascomycota) and their pycnidial, sporodochial, and synnematous anamorphs. Studies in Mycology 71: 1-210. (Monograph)

  3. Chaverri, P., Huhndorf, S., Rogers, J., Samuels, G.J. 2010. Microhongos Comunes de Costa Rica y otras regiones tropicales (Ascomycota, Pezizomycotina, Sordariomycetes). Common Microfungi of Costa Rica and other tropical regions (Ascomycota, Pezizomycotina, Sordariomycetes). INBio Editorial: Heredia. 241 pp. + 60 lam. pp. (Book)

  4. Chaverri, P., Liu, M., Hodge, K.T. 2008. Neotropical Hypocrella (anamorph Aschersonia), Moelleriella, and Samuelsia. Studies in Mycology 60: 1-68. (Monograph)

  5. Samuels, GJ, Rossman, AY, Chaverri, P., Overton, BE, Põldmaa, K. 2006. Hypocreales of the Southeastern United States: An Identification Guide. CBS Biodiversity Series No. 4. Centraalbureau voor Schimmelcultures (CBS): Utrecht. 145 pp. (Book)

  6. Chaverri, P., Samuels, G.J. 2003. Hypocrea/Trichoderma (Ascomycota, Hypocreales, Hypocreaceae): Species with green ascospores. Studies in Mycology 48: 1-116. (Monograph)


Publications in journals:​​

  1. Bhunjun CS, [+144 co-authors], Hyde KD, Crous PW. 2024. What are the 100 most cited fungal genera? Studies in Mycology 108 (in press). *P. Chaverri is 55th author and contributed with the chapter on Trichoderma (pp. 22-27)

  2. Zuffa, S., et al. [P. Chaverri: 36th co-author out of 106]. 2024. A taxonomically-informed mass spectrometry search tool for microbial metabolomics data. Nature Microbiology 9: 336-345

  3. Castillo-González, H.*, Bloomberg, J., Alvarado-Picado, E., Yarwood, S., Chaverri, P. 2024. Agricultural practices influence foliar endophytic communities in coffee plants of different varieties. Agrosystems, Geosciences & Environment (in press

  4. Hyde, K.D., et al. 2023. Global consortium for the classification of fungi and fungus-like taxa. Mycosphere 14(1): 1960-2012. (Global consortium paper with 100+ mycologists)

  5. Escudero-Leyva E.*, Quirós-Guerrero, L., Vásquez-Chaves, V., Pereira-Reyes, R., Chaverri, P., Tamayo-Castillo, G. 2023. Differential volatile organic compound expression from the interaction of Daldinia eschscholtzii and Mycena citricolor. ACS Omega  8: 31373-31388. (Article selected for the cover of volume 8, issue 34, of ACS Omega)

  6. Scott, K., Konkel, Z., Gluck-Thaler, E., Valero David, G.E., Farinas, C., Grootmyer, D., Chaverri, P., Slot, J. 2023. Endophyte genomes support greater metabolic gene cluster diversity compared with non-endophytes in Trichoderma. PLoS ONE 18(12): e0289280.

  7. Escudero-Leyva, E.*, Granados-Montero, M., Orozco-Ortiz, C., Araya-Valverde, E., Alvarado-Picado, E., Chaves-Fallas, J.M., Aldrich-Wolfe, L., Chaverri, P. 2023. The endophytobiome of wild Rubiaceae as a source of antagonistic fungi against the American Leaf Spot of coffee (Mycena citricolor). Journal of Applied Microbiology 134: lxad090 (The Microbiologist, the news magazine for Applied Microbiology International, highlights this research article in: "Endophytes colonize and protect coffee seedlings" by L. Stewart; May 15, 2023)

  8. Rojas-Gätjens, D., Avey-Arroyo, J., Chaverri, P., Rojas-Jimenez, K., Chavarría, M. 2023. Differences in fungal communities in the fur of two- and three-toed sloths revealed by ITS metabarcoding. Microbiology 169: 001309.

  9. Chaverri, P., Romberg, M., Montero-Vargas, M., McKemy, J., Rane, K., Balbalian, C.J., Castlebury, L.A. 2023. Phylogeographic and phylogenomic structure of the quarantine plant pathogen Colletotrichum liriopes, including new reports in the United States. Plant Disease 107: 2816-2824.

  10. Escudero-Leyva, E.*, Vieto, S., Avendaño, R., Rojas-Gätjens, D., Agüero, P., Pacheco, C., Montero, M.L., Chaverri, P., Chavarría, M. 2023. Fungi with history: Unveiling the mycobiota of historic documents of Costa Rica. PLoS ONE 18(1):e0279914. (Chaverri, corresponding author)

  11. Castro-Moretti, F.R., Cocuron, J.-C., Castillo-Gonzalez, H., Escudero-Levya, E., Chaverri, P., Filho, O.G., Slot, J.C., Alonso, A.P. 2023. A metabolomic platform to identify and quantify polyphenols in coffee and related species using liquid chromatography mass spectrometry. Frontiers in Plant Science 13: 1057645.

  12. Granados-Montero, M., Zuñiga-Castañeda, M., Chaverri, P., Escudero-Leyva, E.*, Mardones-Hidalgo, M. 2022. Patogenicidad de hongos asociados a plantas de fresa y descripción ultraestructural del patosistema [Pathogenicity of fungi associated to strawberries and ultrastructural description of the pathosystem] Agronomía Costarricense 46: 9-28.

  13. Campos-Esquivel, L.*, Hanson, P.E., Escudero-Leyva, E.*, Chaverri, P. 2022. Virulence of native isolates of entomopathogenic fungi (Hypocreales) against the "sweetpotato whitefly" Bemisia tabaci (Hemiptera: Aleyrodidae), including the effects of temperature and fungicides. Journal of Invertebrate Pathology 192: 07787.

  14. Crous PW, Sandoval-Denis M, Costa MM, Groenewald JZ, van Iperen AL, Starink-Willemse M, Hernández-Restrepo M, Kandemir H, Ulaszewski B, de Boer W, Abdel-Azeem AM, Abdollahzadeh J, Akulov A, Bakhshi M, Bezerra JDP, Bhunjun A, Câmara MPS, Chaverri P, Vieira WAS, Decock CA, Gaya E, Gené J, Guarro J, Gramaje D, Grube M, Gupta VK, Guarnaccia V, Hill R, Hirooka Y, Hyde KD, Jayawardena RS, Jeewon R, Jurjević Ž, Korsten L, Lamprecht SC, Lombard L, Maharachchikumbura SSN, Polizzi G, Rajeshkumar KC, Salgado-Salazar C, Shivas RG, Summerbell RC, Sun GY, Swart WJ, Tan YP, Vizzini A, Xia JW, Zare R, González CD, Iturriaga T, Savary O, Coton M, Coton E, Jany J-L, Liu C, Zhuang W-Y, Yu Z-H, Zeng Z-Q, Thines M. 2022. Fusarium and allied fusarioid taxa (FUSA). 1. Fungal Systematics and Evolution 9: 161–199.

  15. Camargos Fonseca, P.L., Skaltsas, D.*, Ferreira da Silva, F., Bentes Kato, R., Marques de Castro, G., Yupanqui García, G.J., Quintanilha-Peixoto, G., […], Chaverri, P., Vaz, A.B.M., Góes-Neto, A. 2022. An integrative view of phyllosphere mycobiome of native rubber trees in the Brazilian Amazon. Journal of Fungi 8: 373

  16. Chaverri, P., Chaverri, G. 2022. Fungal communities in feces of the frugivorous bat Ectophylla alba and its highly specialized Ficus colubrinae diet. Animal Microbiome 4: 24

  17. Escudero-Leyva, E.*, Alfaro-Vargas, P., Muñoz-Arrieta, R., Charpentier-Alfaro, C., Granados-Montero, M., Alvarado-Picado, E., Rodríguez-Rodríguez, C., Chaverri, P., Mora-Villalobos, A. 2022. Tolerance and biological removal of fungicides by Trichoderma species isolated from the endosphere of wild Rubiaceae plants. Frontiers in Agronomy 3: 772170 (P. Chaverri: corresponding author)

  18. Vieto, S., E. Escudero-Leyva*, R. Avendaño, N. Rechnitzer, M.D. Barrantes-Madrigal, G. Conejo-Barboza, O.A. Herrera-Sancho, P. Chaverri, M. Chavarría. 2022. Biodeterioration and cellulolytic activity by fungi isolated from a nineteenth-century painting from the National Theatre of Costa Rica. Fungal Biology 126: 101-112 (P. Chaverri: corresponding author)

  19. Adamo, I., E. Ortiz-Malavasi, R. Chazdon, P. Chaverri, H. ter Steege, J. Geml. 2021. Richness and composition of soil fungal communities correlate with site-specific abiotic factors, tree community composition, and forest age in regenerating tropical rainforests. Biology 10(11): 1120. (Special issue: Diversity of Soil Fungal Communities) (cover image and story)

  20. Crous, P.W., Lombard, L., Sandoval-Denis, M., Seifert, K.A., Schroers, H.-J., Chaverri, P., et al. 2021. Fusarium: more than a node or a foot-shaped basal cell. Studies in Mycology 98: 100116.

  21. Barrera, V., Iannone, L., Romero, A. I., Chaverri, P. 2021. Expanding the Trichoderma harzianum species complex: Two new species from Argentinian natural and cultivated ecosystems. Mycologia 113: 1136-1155.

  22. Granados-Montero, M., Chaves-Barrantes, N., Chaverri, P., Hernandez-Fonseca, J.C., Escudero-Leyva, E.* 2021. Fungi associated with common bean wilt in Costa Rica. Revista Mexicana de Fitopatología-Mexican Journal of Phytopathology 39 (in press

  23. Seas, C.*, Chaverri, P. 2020. Response to experimental temperature increase by psychrophilic plant endosymbionts. Royal Society Open Science 7: 201405.

  24. Fernandes da Silva, R.A., Pereira de Almeida, C., Reis, A., Mendes Aguiar, F., Chaverri, P., Batista Pinho, D. 2020. Three new species of Gliocephalotrichum causing fruit rot on different hosts from the Brazilian cerrado. Mycologia 112: 1003-1016.

  25. González, C.D.*, Morales, R.A., Chaverri, P. 2020. Life cycle and in vitro sporulation dynamics of Corinectria constricta, the causal agent of Pinus radiata stem canker, in Chile. Forest Pathology 80(3): e12594.

  26. Montero-Vargas, M., Umaña-Jiménez, J., Escudero-Leiva, E.*, & Chaverri, P. 2020. Phylogenetic analysis of ITS data from endophytic fungi using Massive Parallel Bayesian Tree Inference with Exabayes. Revista Tecnología En Marcha, 33(5): 74-79.

  27. Montero-Vargas, M., Escudero-Leyva, E.*, Díaz-Valerio, S., Chaverri, P. 2020. Step-by-step pipeline for the ecological analysis of endophytic fungi. Current Protocols in Microbiology 56(1):e96.

  28. Talavera-Ortiz, A., Chaverri, P., Díaz-Godínez, G., Acosta-Urdapilleta, M.L., Villegas, E., Maura Téllez-Téllez. 2020. Mycelial inhibition of Trichoderma spp. isolated from the cultivation of Pleurotus ostreatus with an extract of Pycnoporus sp. Acta Botanica Mexicana 127: e1537.

  29. Pujade-Renaud, V., M. Déon, R. Gazis*, S. Ribeiro, S. Labernia, F. Granet, F. Dessailly, P. Chaverri. 2019. Endophytes from wild rubber trees as antagonists of the pathogen Corynespora cassiicola. Phytopathology 109:1888-1899.

  30. Skaltsas, D.*, Badotti, F., Vaz, A.B.M., Gazis, R., Wurdack, K., Castlebury, L.A., Góes-Neto, A., Chaverri, P. 2019. Exploration of stem endophytic communities revealed developmental stage as one of the drivers of fungal endophytic community assemblages in two Amazonian hardwood genera. Scientific Reports 9: 12685.

  31. Vaz, A. B. M., Fonseca, P. L.C., Badotti, F., Skaltsas*, D., Tomé, L. M. R., Silva, A. C., Cunha, M. C., Soares, M. A., Santos, V. L., Oliveira, G., Chaverri, P., Góes-Neto, A. 2018. A multiscale study of fungal endophyte communities of the foliar endosphere of native rubber trees in Eastern Amazon. Scientific Reports 8: 16151.

  32. Fonseca, P.L.C.; Aguiar, E.R.G.R.; Badotti, F.; Oliveira, T.F.P.1; Fonseca, A.A.; Vaz, A.B.M.; Tomé, L.M.R.; Abrahão, J.S.; Marques, J.T.; Trindade, G.S.; Chaverri, P.; Góes-Neto, A. 2018. Virome analyses of Hevea brasiliensis using small RNA deep sequencing and PCR techniques reveal the presence of a potential new virus. Virology Journal 15(1):184.

  33. Coronado, C., Avendaño, R., Escudero-Leyva, E.*, Conejo-Barboza, G., Chaverri, P., Chavarría, M. 2018. Two new cellulolytic fungal species isolated from a 19th-century art collection. Scientific Reports 8: 7492.

  34. Robbertse, B., Strope, P., Chaverri, P., Gazis, R.*, Schoch, C.L. 2017. Taxonomic accuracy for fungi in public sequence databases: applying ‘One name one species’ in well-defined genera with Trichoderma/Hypocrea as a test case. Database 2017: bax072.

  35. González, C.*, Chaverri, P. 2017. Corinectria, a new genus to accommodate Neonectria fuckeliana and taxonomic status of isolates infecting Pinus radiata in Chile. Mycological Progress 16:1015-1027.

  36. Rossman, A.Y., W.C. Allen, U. Braun, L.A. Castlebury, P. Chaverri, P.W. Crous, D.L. Hawksworth, K.D. Hyde, P. Johnston, L. Lombard, M. Romberg, R.A. Samson, K.A. Seifert, J.K. Stone, D. Udayanga, J. F. White. 2016. Overlooked competing asexual and sexually typified generic names of Ascomycota with recommendations for their use or protection. IMA Fungus 7: 289-308.

  37. Vidaurre Montoya, Q., Andrade Meirelles, L., Chaverri, P., Rodrigues, A. 2016. Unraveling Trichoderma species in attine ant environment: description of three new taxa. Antonie van Leeuwenhoek Journal of Microbiology 109: 633-651.

  38. Herrera, C.S.*, Chaverri, P. 2015. Pseudocospeciation of the mycoparasite Cosmospora with their associated fungal hosts. Ecology and Evolution 6: 1504-1514.

  39. Gazis, R.*, Chaverri, P. 2015. Wild trees in the Amazon basin harbor a great diversity of beneficial endosymbiotic fungi: Is this evidence of protective mutualism? Fungal Ecology 17: 18-29.

  40. Rosmana, A., Samuels, G.J., Ismaiel, A., Ibrahim, E.S., Chaverri, P., Herawati, Y. 2015. Trichoderma asperellum: A dominant endophyte species in cacao grown in Sulawesi with potential for controlling Vascular Streak Dieback disease. Tropical Plant Pathology 40: 19-25.

  41. Herrera, C.S.*, Rossman, A.Y., Samuels, G.J., Liparini-Pereira, O., Chaverri, P. 2015. Systematics of the Cosmospora viliuscula species complex. Mycologia 107:532-557.

  42. Chaverri, P., Branco-Rocha, F., Jaklitsch, W., Degenkolb, T., Gazis, R.*, Samuels, G.J. 2015. Systematics of the Trichoderma harzianum species complex and the reidentification of commercial biocontrol strains. Mycologia 107:558-590.

  43. Degenkolb T., Nielsen K.F., Dieckmann R., Branco-Rocha F., Chaverri P., Samuels G.J., Thrane U., von Döhren H., Vilcinskas A., Brückner H. 2015. Peptaibol, secondary metabolite, and hydrophobin pattern of commercial biocontrol agents formulated with species of the Trichoderma harzianum complex. Chemistry and Biodiversity 12:662-684.

  44. Martin, R., Gazis, R.*, Skaltsas, D.*, Chaverri, P., Hibbett, D. 2015. Unexpected diversity of basidiomycetous endophytes in sapwood and leaves of Hevea. Mycologia 107: 284-297.

  45. Salgado-Salazar, C.*, Rossman, A.Y., Samuels, G.J., Hirooka, Y., Sanchez, R.M., Chaverri, P. 2015. Phylogeny and taxonomic revision of Thelonectria discophora (Ascomycota, Hypocreales, Nectriaceae) species complex. Fungal Diversity 70: 1-29.

  46. Gazis, R.*, Skaltsas, D.*, Chaverri, P. 2014. Novel endophytic lineages of Tolypocladium provide new insights into the ecology and evolution of Cordyceps-like fungi. Mycologia 106: 1090-1105

  47. Salgado-Salazar, C.*, Rossman, A.Y., Chaverri, P. 2013. Not as ubiquitous as we thought: taxonomic crypsis, hidden diversity and cryptic speciation in the cosmopolitan fungus Thelonectria discophora (Nectriaceae, Hypocreales, Ascomycota). PLoS ONE 8(10): e76737.

  48. Chaverri, P., Samuels, G.J. 2013. Evolution of habitat preference and nutrition mode in a cosmopolitan fungal genus with evidence of interkingdom host jumps and major shifts in ecology. Evolution 67: 2823-2837.

  49. Herrera, C.S.*, Rossman, A.Y., Samuels, G.J., Chaverri, P. 2013. Pseudocosmospora - a new genus to accommodate Cosmospora vilior and related species. Mycologia 105:1287-1305.

  50. Herrera, C.S.*, Rossman, A.Y., Samuels, G.J. Lechat, C., Chaverri, P. 2013. Revision of the genus Corallomycetella with Corallonectria gen. nov. for C. jatrophae (Nectriaceae, Hypocreales). Mycosystema 32: 518-544 (special edition dedicated to R.F. Korf).

  51. Hirooka, Y.**, Rossman, A.Y., Zhuang, W-Y., Salgado, C.*, Chaverri, P. 2013. Species delimitation for Neonectria coccinea group including the causal agents of beech bark disease (BBD) in Asia, Europe, and North America. Mycosystema 32: 485-517 (special edition dedicated to R.F. Korf).

  52. Unterseher, M., Gazis, R.*, Chaverri, P., García Guarniz, C.F., Zavaleta Tenorio, D.H. 2013. Endophytic fungi from Peruvian highland and lowland habitats form distinctive and host plant specific assemblages. Biodiversity and Conservation 22: 999-1016.

  53. Rossman, A.Y., Seifert, K.A., Samuel, G.J., Minnis, A.M., Schroers, H.-J., Lombard, L., Crous, P.W., Põldma, K., Cannon, P.F., Summerbel, R.C., Geiser, D.M., Zhuan, W.-Y., Hirooka, Y., Herrera, C.*, Salgado-Salazar, C.*, Chaverri, P. 2013. Genera in Bionectriaceae, Hypocreaceae, and Nectriaceae (Hypocreales) proposed for acceptance or rejection. IMA Fungus 4: 41-51.

  54. Gazis, R.*, Miadlikowska, J., Lutzoni, F., Arnold, A.E., Chaverri, P. 2012. Culture-based study of endophytes associated with rubber trees in Peru reveals a new class of Pezizomycotina: Xylonomycetes. Molecular Phylogenetics and Evolution 65: 294-304.

  55. Salgado, C.*, Rossman, A.Y, Samuels, G.J., M. Capdet, Chaverri, P. 2012. Multigene phylogenetic analyses of the Thelonectria coronata and T. veuillotiana species complexes. Mycologia 104: 1325-1350.

  56. Schoch, C.L., Seifert, K.A., Huhndorf, S., Robert, V., Spouge, J.L., Levesque, A.,Chen, W., and Fungal Barcoding Consortium*. 2012. Nuclear ribosomal internal transcribed spacer (ITS) region as a universal DNA barcode marker for Fungi. Proc. Nat. Acad. Sci. 109: 6241-6246. *P. Chaverri is part of the Fungal Barcoding Consortium.

  57. Samuels, G.J., Ismaiel, A., de Souza, J., Chaverri, P. 2012. Trichoderma stromaticum and its overseas relatives. Mycological Progress 11: 215-254.

  58. Gazis, R.*, Rehner, S., Chaverri, P. 2011. Species delimitation in fungal endophyte diversity studies and its implications in ecological and biogeographic inferences. Molecular Ecology 20: 3001-3013. (Article highlighted in the PERSPECTIVES in Mol. Ecol., 2011, 20: 2873-2875).

  59. Hirooka, Y.**, Rossman, A.Y., Chaverri, P. 2011. Morphological and phylogenetic analyses of the Nectria cinnabarina species complex. Studies in Mycology 68: 35-56.

  60. Chaverri, P., Salgado, C.*, Hirooka, Y.**, Rossman, A.Y., Samuels, G.J. 2011. Delimitation of Neonectria and Cylindrocarpon and related genera with Cylindrocarpon-like anamorphs. Studies in Mycology 68: 57-78.

  61. Chaverri, P., Gazis, R.*, Samuels, G.J. 2011. Trichoderma amazonicum, a new endophytic species on Hevea brasiliensis and H. guianensis from the Amazon basin. Mycologia 103: 139-151.

  62. Chaverri, P., Gazis, R.* 2011. Linking ex planta fungi with their endophytic stages: Perisporiopsis, a common leaf litter and soil fungus, is a frequent endophyte of Hevea spp. and other plants. Fungal Ecology 4: 94-102.

  63. Chaverri, P., Gazis, R.* 2010. Perisporiopsis lateritia, a new species on decaying leaves of Hevea spp. from the Amazon basin in Peru. Mycotaxon 113: 163-169.

  64. Gazis R.*, Chaverri, P. 2010. Diversity of fungal endophytes in leaves and stems of wild rubber trees (Hevea brasiliensis) in Peru. Fungal Ecology 3: 240-254.

  65. Hirooka, Y.**, Kobayashi, T., Ono, T., Rossman, A.Y., Chaverri, P. 2010. Verrucostoma, a new genus in the Bionectriaceae from the Bonin Islands, Japan. Mycologia 102: 418-429.

  66. Minnis, D., Samuels, G.J., Chaverri, P. 2009. Three nomenclatural corrections for species of Hypocrea/Trichoderma. Mycotaxon 109: 245-246.

  67. Liu, M., Milgroom, M.G., Chaverri, P., Hodge, K.T. 2009. Speciation of a tropical fungal species pair following transoceanic dispersal. Molecular Phylogenetics and Evolution 51: 413-426.

  68. Tadych, M., Chaverri, P., Bergen, M., White, J.F. 2009. Moelleriella zhongdongii: stromal development and identification of Hirsutella-like and Aschersonia synanamorphs. Mycological Research 113: 611-615.

  69. Samuels, G.J., Lu, B.-S., Chaverri, P., Candoussau, F., Fournier, J., Rossman, A.Y. 2009. Cyanonectria, a new genus for Nectria cyanostoma and its Fusarium anamorph. Mycological Progress 8: 49-58.

  70. Rojas, E.I., Herre, E.A., Mejía, L.C., Arnold, A.E., Chaverri, P., Samuels, G.J. 2008. Endomelanconiopsis endophyticum, a new Botryosphaeria leaf endophyte from Panama. Mycologia 100: 760-775.

  71. Degenkolb, T., Ralf, D., Nielsen, K.F., Grafenhan, T., Theis, C., Zafari, D., Chaverri, P., Ismaiel, A., Bruckner, H., Von Dohren, H., Thrane, U., Petrini, O., Samuels, G.J. 2008. The Trichoderma brevicompactum clade: a new lineage with new species, new peptaibiotics, and mycotoxins. Mycological Progress 7: 177-209.

  72. Chaverri, P., Vílchez, B. 2006. Hypocrealean (Hypocreales, Ascomycota) fungal diversity in different stages of succession in a tropical forest in Costa Rica. Biotropica 38: 531-543.

  73. Liu, M., Chaverri, P., Hodge, K.T. 2006. A taxonomic revision of the insect biocontrol fungus Aschersonia aleyrodis, its allies with white stromata and their Hypocrella sexual states. Mycological Research 110: 537-554.

  74. Chaverri, P., Bischoff, J.F., Evans, H.C., Hodge, K.T. 2005. Regiocrella, a new entomopathogenic genus with a pycnidial anamorph and its phylogenetic placement in the Clavicipitaceae. Mycologia 97: 1225-1237.

  75. Chaverri, P., Bischoff, J.F., Hodge, K.T. 2005. A new species of Hypocrella, H. macrostroma, and its relationship to other species with large stromata. Mycological Research 109: 1268-1275.

  76. Bischoff, J.F., Chaverri, P., White, J.F. 2005. Clarification of the host substrate of Ascopolyporus (Clavicipitaceae, Hypocreales) and description of Ascopolyporus philodendrus sp. nov. Mycologia 97: 710-717.

  77. Chaverri, P., Samuels, G. J., Hodge, K. T. 2005. The genus Podocrella and its nematode-killing anamorph Harposporium. Mycologia 97: 433-443.

  78. Druzhinina, I. S., Chaverri, P., Fallah, P., Kubicek, C. P., Samuels, G. J. 2004. Hypocrea flaviconidia, a new species from Costa Rica with yellow conidia. Studies in Mycology 50: 401-407.

  79. Chaverri, P., Candoussau, F., Samuels, G.J. 2004. Hypocrea phyllostachydis and its Trichoderma anamorph, a new bambusicolous species from France. Mycological Progress 3: 29-36.

  80. Lu, B.S., Druzhinina, I.S., Fallah, P., Chaverri, P., Gradinger, C., Kubicek, C.P., Samuels, G.J. 2004. Hypocrea/Trichoderma species with pachybasium-like conidiophores: teleomorphs for T. minutisporum and T. polysporum, and their newly discovered relatives. Mycologia 96: 310-342.

  81. Chaverri, P., Castlebury, L.A., Overton, B.E., Samuels, G.J. 2003. Hypocrea/Trichoderma: species with conidiophore elongations and green conidia. Mycologia 95: 1100-1140.

  82. Chaverri, P., Castlebury, L.A., Samuels, G.J., Geiser, D.M. 2003. Multilocus phylogenetic structure of Trichoderma harzianum/Hypocrea lixii complex. Molecular Phylogenetics and Evolution 27: 302-313.

  83. Dodd, S.L., Lieckfeldt, E., Chaverri, P., Overton, B.E., Samuels, G.J. 2002. Taxonomy and phylogenetic relationships of two species of Hypocrea with Trichoderma anamorphs. Mycological Progress 1: 409-428.

  84. Chaverri, P., Samuels, G.J. 2002. Hypocrea lixii, the teleomorph of Trichoderma harzianum. Mycological Progress 1: 283-286.

  85. Chaverri, P., Samuels, G.J., Stewart, E.L. 2001. Hypocrea virens sp. nov., the teleomorph of Trichoderma virens. Mycologia 93: 1113-1124.

  86. Chaverri, P., Samuels, G.J., Stewart, E.L., Umaña, L. 2001. Hypocrea nigrovirens sp. nov., a new species with a gliocladium-like anamorph. Mycologia 93:758-763.

  87. Arguedas, M., Chaverri, P. 1999. Problemas fitosanitarios en laurel (Cordia alliodora (Ruiz & Pavón) Oken) en Costa Rica. Rev. Tecnología en Marcha 13: 18-24.


Extension publications:


Technical Notes (peer-reviewed):

  • Carvajal-Ruiz, A., Ávila-Arias, C., Murillo-Cruz, R., Chaverri, P. 2020. Severidad de la “Pudrición del tallo” en vivero sobre una colección genética de Gmelina arborea Roxb. [Severity of “Stem rot” in a genetic collection of nursery seedlings of Gmelina arborea Roxb.]. Rev. Forestal Mesoamericana Kurú 18(42): in press.

  • Arguedas, M., Sevilla, C., Chaverri, P. 2005. Daños causados por un escarabajo ambrosial (Curculionidae, Scolytinae, Xyleborus) en Vochysia ferruginea Mart. (Vochysiaceae) [Damage caused by the ambrosia beetle (Curculionidae, Scolytinae, Xyleborus) in Vochysia ferruginea Mart. (Vochysiaceae)]. Rev. Forestal Mesoamericana Kurú 2(4): 36-42.


Refereed Extension Publications:

  • Arguedas, M., Chaverri, P., Verjans, J-M. 2004. Problemas fitosanitarios de la teca en Costa Rica [Phytosanitary problems in teak from Costa Rica]. Rev. Recursos Naturales y Ambiente 41: 130-135.

  • Arguedas, M., Chaverri, P. 1997. Abejones barrenadores, Cerambycidae [Wood-borer beetles, Cerambycidae]. Series: Forestry Pests. # 20: 1-8. Forest Engineering Department, Technological Information Center -CIT-, ITCR: Cartago.

  • Chaverri, P., Chavarría-Díaz, L. P. 1997. Avances en el inventario y recolección de especies de ascomicetos en el Área de Conservación Guanacaste [Advances in the collection and inventory of ascomycetous fungi in Guanacaste Conservation Area]. Boletín informativo Rothschildia 4(2).

  • Arguedas, M., Chaverri, P., Miller C. 1995. Control biológico de plagas forestales [Biological control of forest pests and diseases]. Series: Forestry Pests. # 17: 1-8. Forest Engineering Department, Technological Information Center -CIT-, ITCR: Cartago.

  • Arguedas, M., Chaverri, P., Miller, C. 1995. Cancro Nectria en especies forestales [Nectria canker on trees]. Series: Forestry Pests. # 18: 1-8. Forest Engineering Department, Technological Information Center -CIT-, ITCR: Cartago.

  • Arguedas, M., Chaverri, P. 1995. Enfermedades virales en Costa Rica [Viral diseases in Costa Rica]. Series: Forestry Pests. # 13: 1-8. Forest Engineering Department, Technological Information Center -CIT-, ITCR: Cartago, Costa Rica.

  • Arguedas, M., Chaverri, P. 1995. Enfermedades de la raíz [Root diseases]. Series: Forestry Pests. # 14: 1-8. Forest Engineering Department, Technological Information Center -CIT, ITCR: Cartago, Costa Rica.

  • Arguedas, M., Chaverri, P. 1993. Enfermedades de follaje del ciprés [Juniper, Cupressus lusitanica foliage diseases]. Series: Forestry Pests. # 4: 1-8. Forest Engineering Department, Technological Information Center -CIT-, ITCR: Cartago, Costa Rica.



  • Arguedas, M., Hilje, L., Chaverri, P., Quirós, L., Scorza, F., Araya, C. 1997. Catálogo de plagas y enfermedades forestales en Costa Rica [Catalogue of forest pests and diseases in Costa Rica]. Second edition. Programa Interinstitucional de Protección Forestal (Inter-institutional Forest Protection Program-PIPROF). Cartago. 67 p.

  • Arguedas, M., Chaverri, P. 1996. Plagas Forestales en Costa Rica [Forest Pests in Costa Rica]. Academic support series #22. Forest Engineering Department, ITCR. Cartago.

  • Chaverri, P. 1995. Plagas y enfermedades encontradas en el vivero forestal experimental del proyecto [Pests and diseases found in the experimental forestry nursery of the project]. Research project: “Restoration of degraded lands for productive management: reforestation with native species” Informative Bulletin # 3: 1-2.


Other publications:


Field Guides:

  • S. Sourell, J.P.M. Araújo, T. Sanjuan, P. Chaverri, R.C. Hoyer. 2020. Entomopathogenic fungi of Tambopata National Reserve, Madre de Dios, Peru. Field Museum Field Guide #1242. 5 pp. (

  • S. Sourell, J.P.M. Araújo, T. Sanjuan, P. Chaverri, J.S. Cardoso. 2019. Entomopathogenic fungi of the Rio Napo Lowlands (Ecuadorian Amazon). Field Museum Field Guide #1136. 4 pp. (

  • S. Sourell, D.J. Lodge, J.P.M. Araújo, T. Baroni, P. Chaverri, A. Furtado, T. Gibertoni, F. Karstedt, J. J.S. Oliveira, L. Trierveiler Pereira, J. S. Cardoso. 2018. Volume 2: Fungi of Reserva Particular do Patrimônio Natural do Cristalino. Field Museum Field Guide #1047. 34 pp. (

  • Chaverri, P., Huhndorf, S., Rogers, J., Samuels, G.J. 2010. Microhongos Comunes de Costa Rica y otras regiones tropicales (Ascomycota, Pezizomycotina, Sordariomycetes). Common Microfungi of Costa Rica and other tropical regions (Ascomycota, Pezizomycotina, Sordariomycetes). INBio Editorial: Heredia. 241 pp. + 60 lam. pp. [already cited above in Books and Monographs]


Book reviews:

  • Chaverri, P. 2010. CBS Laboratory Manual Series 1: Fungal Biodiversity. 2009. P.W. Crous, G.J.M. Verkley, J.Z. Groenewald, R.A. Samson (eds.). Centraalbureau voor Schimmelcultures: Utrecht. 269 pp. Reviewed in Inoculum 61 (3): 11-12.

  • Chaverri, P. 2008. The identification of fungi: an illustrated introduction with keys, glossary, and guide to literature. 2006. F. Dugan. APS Press: 182 pp. Reviewed in Inoculum 59(3): 22.

  • Chaverri, P. 2002. Molecules, morphology and classification: Towards monophyletic genera in the Ascomycetes. Studies in Mycology 45. 2000. K.A. Seifert, W. Gams, P. Crous, G.J. Samuels. Reviewed in Inoculum 52(5): 27-28.



  • Chaverri, P., Knight, C.A., Salgado-Salazar, C. 2023. 44th Mid-Atlantic States Mycology Conference (MASMC). Inoculum (June issue).

  • Chaverri, P. 2022. Foreword. Advances in Trichoderma Biology for Agricultural Applications. Eds. N. Amaresan, A. Sankaranarayanan, M. Kumar Dwivedi, I.S. Druzhinina. Springer Nature Switzerland AG. 440 p. [book]

  • Su Yien Ting, A., Chaverri, P., Edrada-Ebel, R.A. 2021. Editorial: Endophytes and Their Biotechnological Applications. Frontiers in Bioengineering and Biotechnology 9: 795174. Special issue: Endophytes and their biotechnological applications.

Non-scientific publications:

  • Chaverri-Echandi, P. 2022. El Perro que Aprendió a Volar. San José: Editorial Cultura CR. 22 pp. (a children's book)

bottom of page