Positions & Publications

[Updated: 1 February 2008]

Michael O. Dillon

B.A. University of Northern Iowa
M.A. University of Northern Iowa
Ph.D. University of Texas at Austin

Principal Professional Employment:

Chair, Botany Department, The Field Museum, Chicago, IL 60605-2498
Curator of Vascular Plants, Department of Botany, TFMuseum
Head of Phanerogams, Department of Botany,TFM
Associate Curator, Department of Botany, TFM
Assistant Curator, Department of Botany, TFM
Visiting Assistant Curator, Department of Botany, TFM

Adjunct Appointments:

Professor, Post-Graduate College, Universidad Nacional de Cajamarca, Cajamarca, Peru
Honorary Professor, Education Faculty, Universidad Nacional de Cajamarca, Cajamarca, Peru
Visiting Professor, Universidad Antenor Orrego, Trujillo, Peru
Honorary Professor, Universidad Nacional de Tumbes, Tumbes, Peru
Honorary Professor, Universidad Nacional de San Agustin, Arequipa, Peru
Honorary Professor, Universidad Ricaro Palma, Lima, Peru
Socio Honorario, Colegio de Biologos del Peru
Fellow, Center for Advanced Studies in Ecology & Biodiversity. Pontificia Universidad Católica de Chile

Other Professional Positions:

Flora of Ecuador, Editorial Committee
Flora Neotropica Editorial Committee
Editorial Committee, Chloris Chilensis
Member, Flora Neotropica Commission

Visiting Researcher Program, Tokyo Metropolitan University, Tokyo, Japan
Visiting Professor and Curator of Beal-Darlington Herbarium, Michigan State University, East Lansing, MI
Arnold Arboretum Associate, Harvard University, MA
Adjunct Lecturer, University of Chicago, IL
National Endowment to the Arts Postdoctoral Fellow, Missouri Botanical Garden, St. Louis, MO
Instructor, Department of Biology, University of Northern IA
Secondary Teacher (Biology & Chemistry), Des Moines, IA

Research Interests:

Systematics of Neotropical Asteraceae, Nolanae-Solanaceae; Floras of Chile, Ecuador, Bolivia, and Peru; Coastal South American Ecology and Biogeography; North/South American Amphitropic Disjunctions; Páramos, Floristic Inventories; Specimen Databases; Internet Information Development in Botany.

Scientific Publications:

  • 1. Two new species of Flourensia (Asteraceae-Heliantheae) from north-central Mexico. Southwestern Naturalist 21:145-149. 1976.
  • 2. Dermatologically active sesquiterpene lactones in trichomes of Parthenium hysterophorus L. (Compositae). Experientia 32: 236-237. 1976. (with E. Rodriguez, T. J. Mabry, J. C. Mitchell and G. H. N. Towers).
  • 3. New flavonoids from Flourensia cernua. Phytochemistry 15: 1085-1086. 1976. (with T.J. Mabry, E. Besson, M. L. Bouillant and J. Chopin).
  • 4. Flavonoid aglycones from Flourensia (Asteraceae-Heliantheae).Phytochemistry 16: 1318-1319. 1977. (with T.J. Mabry).
  • 5. New or noteworthy Asteraceae from Panama. Ann. Missouri Bot. Gard. 65: 766-768. 1978. (with W. C. D'Arcy).
  • 6. Chromosome reports for Asteraceae. Taxon 28:278-279. 1979.
  • 7. Chromosome reports for Krameriaceae and Solanaceae. Taxon 29: 534. 1980. (with B.L.Turner).
  • 8. Compositae: Introduction to Family, In: J.F. Macbride & Collaborators, Flora of Peru, Fieldiana: Botany, N.S. 5, 12-21. 1980.
  • 9. Acosmium, Aeschynomene, Alysicarpus, Ateleia, Chaetocalyx, Dussia, Myroxylon, Ormosia, Sophora, Stylosanthes and Zornia, In: J. D. Dwyer & Collaborators, Flora of Panama, Part V. Leguminosae subfamily Papilionoideae. Ann. Missouri Bot. Gard. 67: 537-553, 579-582, 678-681, 735-743, 766-768, 773-776, 804- 808. 1981.
  • 10. Three new species of Flourensia (Asteraceae-Heliantheae) from South America. Ann. Missouri Bot. Gard. 68:104-110. 1981.
  • 11. Family Compositae: Part II. Tribe Anthemideae. In, J. F. Macbride & Collaborators, Flora of Peru, Fieldiana: Botany, N.S. 7, 1-21. 1981.
  • 12. Family Compositae: Part IV. Tribe Cardueae. In, J. F. Macbride & Collaborators, Flora of Peru, Fieldiana: Botany, N.S. 10, 1-8. 1982.
  • 13. Family Compositae: Additions to the Tribe Vernonieae. In, J. F. Macbride & Collaborators, Flora of Peru, Fieldiana: Botany, N.S. 11, 1-7. 1982.
  • 14. Chromosome Numbers of Peruvian Compositae. Rhodora 84:131- 137. 1982. (with B.L. Turner).
  • 15. A New Species of Bidens (Heliantheae-Asteraceae) from Guatemala. Phytologia 54: 225-227. 1983.
  • 16. A Systematic Study of Flourensia (Asteraceae, Heliantheae). Fieldiana: Botany, N.S. 16, 1-67. 1984.
  • 17. Two New Species of Vernonia (Asteraceae: Vernonieae) from Peru. Brittonia 36: 333-336. 1984.
  • 18. A new combination in Ambrosia (Heliantheae-Asteraceae) from Peru. Phytologia 56:337-338. 1984.
  • 19. Four New Species of Asteraceae from Peru. Brittonia 37:6-13. 1985. (with A. Sagástegui A.).
  • 20. New species and combinations in Belloa (Inuleae-Asteraceae). Phytologia 58: 392-400. 1985. (with A. Sagástegui A.)
  • 21. New Species and Status Changes in Andean Inuleae (Asteraceae). Phytologia 59: 227-233. 1986. (with A. Sagástegui A.).
  • 22. A New Species of Flourensia (Asteraceae, Heliantheae) from Northern Peru. Brittonia 38: 32-34. 1986.
  • 23. Jalcophila, a new genus of Andean Inuleae (Asteraceae). Brittonia 38: 162-167. 1986. (with A. Sagástegui A.)
  • 24. A New Species of Achyrocline (Inuleae-Asteraceae) from Peru. Phytologia 60: 107-110. 1986. (with A. Sagástegui A.)
  • 25. Chromosome Reports. Taxon 35:409-410. 1986. (with S. Sundberg)
  • 26. A New Species of Monactis (Heliantheae-Asteraceae) From Northern Peru. Phytologia 61:5-8. 1986. (with A. Sagástegui A.)
  • 27. Sesquiterpene Lactones from Helogyne hutchisonii. Phytochemistry 25: 2563-2565. 1986. (with J. Jakupovic, V.P. Pathak, F. Bohlmann, D. Gage)
  • 28. Helogynic acid, a homoditerpene, and other constituents from Helogyne apaloidea. Phytochemistry 27:616-621. 1988. (with C. Zdero, F. Bohlmann).
  • 29. Lumiyomogin, Ferreyrantholide, Fruticolide and other sesquiterpene lactones from Ferreyranthus fruticosus. Phytochemistry 27:1113-1120. 1988. (with J. Jakupovic, A. Schuster, F. Bohlmann)
  • 30. Additions to the South American Senecioneae (Asteraceae). Brittonia 40: 221-228. 1988. (with A. Sagástegui A.)
  • 31. Two new species of Llerasia (Astereae-Asteraceae) from Peru. Brittonia 40: 363-367. 1988. (with A. Sagástegui A.)
  • 32. Eudesmanolides, 5,10-bis-epi-eudesmanes and oplopanone derivatives from Ambrosia artemisioides. Phytochemistry 27: 3551-3556. 1988. (with J. Jakupovic, M. Jaensch, F. Bohlmann)
  • 33. A new species of Symplocos (Symplocaceae) from northern Peru. Brittonia 41: 32-34. 1989. (with A. Sagástegui A.)
  • 34. The botanical response of the Atacama and Peruvian Desert Flora to the 1982-83 El Niño event, pps. 487-504. In: P. W. Glynn (ed.), Global Ecological Consequences of the 1982-83 El Niño- Southern Oscillation, Elsevier Science Publishers, New York. 1990. (with P. W. Rundel)
  • 35. Oligandra Less. revisited and the need for a new genus, Pseudoligandra (Asteraceae:Inuleae). Taxon 39:125-128. 1990. (with A. Sagástegui A.)
  • 36. A new peltate Hydrocotyle (Umbelliferae) from Northern Peru. Brittonia 42: 257-259. 1990. (with L. Constance)
  • 37. Crossothamnus pascoanus (Asteraceae-Eupatorieae), a new species from Pasco, Peru. Phytologia 69: 420-423. 1991. (with B. L. Turner).
  • 38. The phytogeography and ecology of the coastal Atacama and Peruvian Deserts. Aliso 13(1): 1-50. 1991. (with P. W. Rundel, B. Palma, H. A. Mooney, S. L. Gulmon, & J. R. Ehleringer)
  • 39. Family Asteraceae: Part V. Tribe Inuleae. In, J. F. Macbride & Collaborators, Flora of Peru, Fieldiana: Botany, N.S. 26, 1-70. 1991. (with A. Sagástegui A.)
  • 40. A New Species of Tillandsia (Bromeliaceae) from the Atacama Desert of Northern Chile. Brittonia 44: 11-16. 1991.
  • 41. Inventario Preliminar de la Flora del Bosque Monteseco (Cajamarca, Peru). Arnaldoa 1: 35-52. 1991. (with A. Sagástegui A.).
  • 42. Sinopsis de los Géneros de Gnaphaliinae (Asteraceae-Inuleae) de Sudamerica. Arnaldoa 1(2): 5-91. 1991(1992). (with A. Sagástegui A.).
  • 43. Family Asteraceae. In L. Brako & J. L. Zarucchi. Catalogue of the Flowering Plants and Gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45: 103-189. 1993. (with N. Hensold)
  • 44. Análisis florístico del Bosque Monteseco (Cajamarca, Perú) e implicancias para su conservación. Arnaldoa 1(3): 45-63. 1993.
  • 45. Una Nueva especies de Trixis (Mutisieae-Asteraceae) del norte del Peru. Arnaldoa 1(3): 9-13. 1993. (with A. Sagástegui A.)
  • 46. A Revision of the Dioecious Genus Griselinia (Griseliniaceae), Including a New Species from the Coastal Atacama Desert of Northern Chile. Brittonia 45: 261-274. 1993. (with M. Muñoz-Schick).
  • 47. Osmoprotective compounds in the Plumbaginaceae: A natural experiment in etabolic engineering of stress tolerance. Proc. Natl. Acad. Sci. 91: 306-310. 1994. (with A. D. Hanson, B. Rathinasabapathi, J. Rivoal, M. Burnet, & D. A. Gage.
  • 48. Bosques Húmedos del Norte del Perú. Arnaldoa 2(1):29-42. 1994.
  • 49. Estudios en la Tribu Liabeae (Asteraceae) en Peru: I. Revisión de Ferreyranthus. Arnaldoa 2(2): 7-23. 1994 (con A. Sagástegui A.).
  • 50. Estudios en la Tribu Liabeae (Asteraceae) en Peru: II. Una nueva especie de Oligactis procedente del Norte del Perú y Sur del Ecuador. Arnaldoa 2(2): 25-30. 1994 (con A. Sagástegui A.).
  • 51. Estudios en la Tribu Liabeae (Asteraceae) en Peru: III. Una nueva especie de Chrysactinium del Norte del Perú. Arnaldoa 2(2): 31-35. 1994 (con A. Sagástegui A.).
  • 52. Floristic Inventory and Biogeographic Analysis of Montane Forests in Northwestern Peru. pp. 251-270, In Biodiversity and Conservation of Neotropical Montane Forests, The New York Botanical Garden, Bronx, NY. 1995. (with A. Sagástegui A. , I. Sánchez V. , S. Llatas Q., and N. C. Hensold).
  • 53. Inventario preliminar de la Flora del Bosque Cachil (Cajamarca, Perú). Arnaldoa 3(2): 19-34. 1995. (with A. Sagástegui-Alva, A., S. Leiva G., P. Lezama, N. Hensold)
  • 54. Liabeae: Taxonomy, Phylogeny and Biogeography. In D.J.N. Hind & H.J. Beentje (eds.). Compositae: Systematics. Proceedings of the International Compositae Conference, Kew. 1994. Vol. 1. pp. 545-567. 1996. Royal Botanic Gardens, Kew. (with V.A. Funk & H. Robinson).
  • 55. Revision of the dioecious genus Chersodoma Phil. (Senecioneae, Asteraceae), including a new species and status change. Brittonia 48: 582-604. 1996. (with A. Sagástegui A.)
  • 56. Sinopsis de Senecio L. (Senecioneae, Asteraceae) para el Perú. Arnaldoa 4 (1): 23-46. 1996. (with T.J. Vision).
  • 57. Lomas Formations-Peru, pp. 519-527. In: S. D Davis, V. H. Heywood, O. Herrera-McBryde, J. Villa-Lobos and A. C. Hamilton (eds.), Centres of Plant Diversity, A Guide andStrategy for their Conservation. WWF, Information Press, Oxford, U.K. 1997.
  • 58. Lomas Formations of the Atacama Desert, Northern Chile, pp. 528-535. In: S. D Davis, V. H. Heywood, O. Herrera-McBryde, J. Villa-Lobos and A. C. Hamilton (eds.), Centres of Plant Diversity, A Guide and Strategy for their Conservation. WWF, Information Press, Oxford, U.K. 1997. (with A. E. Hoffmann-J.)
  • 59. Flora and Vegetation of Pan de Azúcar National Park in the Atacama Desert of Northern Chile. Gayana Bot. 53: 295-315. 1996. (with P. W. Rundel & B. Palma)
  • 60. Rol de INTERNET en la Crisis de la Biodiversidad, In Simposio: Estrategias para Bioconservacion en el Norte del Peru. Arnaldoa 4(2): 93-121. 1997 (1998).
  • 61. Tillandsia landbeckii in the coastal Atacama Desert of northern Chile. Rev. Chilena Hist. Nat. 70: 341-348. 1997. (with P. Rundel, B. Palma, M.R. Sharifi, E.T. Nilsen, & K. Boonpragob).
  • 62. Una nueva especie de Critoniopsis (Vernonieae: Asteraceae) de Cajamarca, Perú. Arnaldoa 5(1): 19-24. 1998. (With A. Sagástegui A.).
  • 63. Una breve revisión del género Vernonia (sensu lato) del Perú. Arnaldoa 5(1): 25-33. 1998. (With A. Sagástegui A.).
  • 64. Una nueva especie de Chrysophyllum (Sapotaceae) con frutos comestibles del noroeste de Perú. Arnaldoa 5(1): 67-75. 1998.
  • 65. Caxamarca, A New Monotypic Genus of Senecionieae (Asteraceae) from Northern Peru. Novon 9(2): 1999. (with A. Sagástegui A.).
  • 66. Ecological patterns in the Bromeliaceae of the lomas formations of Coastal Chile and Peru. Plant Syst. Evo. 212: 261-278. 1998. (with P. Rundel).
  • 67. Diversidad Floristica del Norte de Perú - Tomo I. 1999. Pp. 228. Trujillo, Peru (with A. Sagástegui A., I. Sánchez V., S. Leiva G., & P. Lezama A.
  • 68. Biogeografía y Evolución en el Clado Nolana (Solaneae-Solanaceae). Arnaldoa 6(2): 81-116. 1999 (2000). (with M. Tago-Nakawaza).
  • 69. A new record of Lobelia anceps (Campanulaceae) in northern Chile. Chloris Chilensis, 2000. URL: (with C. Trujillo C.).
  • 70. LOMAFLOR, SearchableDatabase. URL:. Posted Dec 2000.
  • 71. Family Asteraceae, Achillea, Achyrocline, Agyranthemum, Blumea, Chaptalia Cirsium, Dendranthema, Gamochaeta, Gerbera, Gnaphalium, Liabum, Lycoseris, Matricaria, Onoseris, Pluchea, Sinclairia, Trixis. Pp. 271-280; 281, 281-282, 292, 298-299, 303-304, 305-306, 311-312, 331, 332, 332-334, 339, 340, 340-341, 349, 358, 369-370, 381. 2000. In: W.D. Stevens, C. Ulloa C., A. Pool, O. M. Montiel (eds.) Flora de Nicaragua. Monographs in Systematic Botany 85, Tomo 1, Missouri Botanical Garden, St. Louis.
  • 72. Classification and phylogeny of the South American Gnaphalieae (Asteraceae). Andean Botanical Information System. URL: www.sacha.org/Gnaphalieae/Gnaphalieae.htm (2000)
  • 73. Una nueva especie de Mikania (Eupatorieae: Asteraceae) de Piura, Perú. Arnaldoa 7(1-2): 7-12. 2000 (2001). (with I. Sánchez V.).
  • 74. Una nueva especie de Critoniopsis (Vernonieae: Asteraceae) del Norte de Perú. Arnaldoa 8(1): 25-35. 2001. (with A. Sagástegui A.).
  • 75. Andean Botanical Information System Webpage (Ver. 6.0) - Dec 2001. - URL: <http://www.sacha.org>
  • 76. Arnaldoa argentea (Barnadesioideae: Asteraceae), a new species and a new generic record for Ecuador. Novon 12: 415-419. 2002. (with C. Ulloa U., P. M. Jørgensen).
  • 77. Tribal classification and diversity in the Asteraceae of Peru. Arnaldoa 8(2): 25-43. 2001(2002). (with A. Sagástegui A.).
  • 78. Nuevos registros para la flora de San Martín, Perú. Arnaldoa 8(2): 45-52. 2001(2002). (with I. Sánchez V., G. Iberico V., M. Zapata, C., & M. L. Kawasaki).
  • 79. Nuevo nombre para una especie de Chrysophyllum (Sapotaceae) del norte del Perú. Arnaldoa 8(2): 57-58. 2002(2003). (with A. Sagástegui A.).
  • 80. Biogeografía, Diversidad Florística y Endemismos En Dos Tipos De Bosques En El Norte de Perú. Arnaldoa 9(2): 111-120. 2002(2003).(with I. Sánchez V., G. Iberico V., A. Sagástegui A., M. Zapata C., y M. L. Kawasaki).
  • 81. New combinations in Luciliocline with notes on South American Gnaphalieae. Arnaldoa 10: 45-60. 2003.
  • 82. Bayer, R., I. Breitwieser, M. Dillon, M. Koekemoer, & J. Ward. 2003. Phylogeny of the Gnaphalieae based on three cpDNA sequences (matK, trnL intron, and trnL/trnF intergenic spacer). Compositae Newsletter 40: 8.
  • 83. The Lomas Formations of Coastal Peru: Composition and Biogeographic History Pp. 1-9. In: Haas, J. & M.O. Dillon (eds.) "El Niño in Peru: Biology and Culture Over 10,000 Years." Fieldiana: Botany, N.S. 43, publ. 1524. 2003. (with M. Nakazawa& S. Leiva)
  • 84. Diversidad Floristica del Norte de Perú - Tomo II, Bosques Montanos. 2004. Pp. 305. Trujillo, Peru. (with A. Sagástegui A., I. Sánchez V., & M. Zapata C.).
  • 85. Una nueva especie de Puya (Bromeliaceae) para el Norte de Perú. 2004. Arnaldoa 11(2): 29-35. (with A. Sagástegui A., & M. Zapata C.)
  • 86. Quipuscoa, V. & M.O. Dillon. 2004. Sinopsis de las Asteraceae del Departamento de Arequipa-Perù. Dilloniana 4(2): 125-152.
  • 87. Freyre, R., A. Douglas, & M. O. Dillon. 2005. Artificial Hybridizations in Five Species of Chilean Nolana (Solanaceae). HortScience 40(3):532-536.
  • 88. Dillon, M.O. 2005. Solanaceae of the Lomas formations of Coastal Peru and Chile. Pp. 131-155. In: Hollowell, V., T. Keating, W. Lewis & T. Croat (eds.), "A Festschrift for William G. D'Arcy: The Legacy of a Taxonomist". Mono. Syst. Bot. Ann. Missouri Bot. Gard. 104.
  • 89. Dillon, M.O. 2005. Familia Asteraceae. Pp. 96-180. In: Flora Genérica de los Páramos: Guía Ilustrada de las Plantas Vasculares, (eds.) P. Sklenár, J.L. Luteyn, C. Ulloa U., P.M. Jørgensen, & M.O. Dillon, Mem. N.Y. Bot. Gard.
  • 90. Dillon, M.O. 2005. Biogeographic patterns and evolution in the Asteraceae of the Páramos, International Botanical Congress, Vienna, Austria, 17-23 July 2005. Abstract, p. 455 & Poster.
  • 91. Sánchez-Vega, I. & M.O. Dillon. 2006. Jalcas. pp. 81-94. En: Moraes R., M., B. Øllgaard, L. Peter Kvist, F. Borchsenius & H. Balslev (eds.) Botánica Económica de los Andes Centrales. Herbario Nacional de Bolivia, Instituto de Ecología, Universidad Mayor de San Andrés, La Paz.
  • 92. Dillon, M.O. 2006. Nuevos registros de Asteraceae para la flora de Perú - New records in the Asteraceae flora of Peru. Arnaldoa 13: 314-317.
  • 93. Funk, V.A., H. Robinson, & M.O. Dillon. 2007. Liabeae (Asteraceae) Pps 175-180. In: K. Kubitzki & J.W. Jeffrey (Eds.), The Families and Genera of Vascular Plants. Asterales. Vol. 8. Springer Verlag, Berlin.
  • 94. Rundel , P.W., P.E Villagra, M.O. Dillon, S. Roig-Juñent and G. Debandi. 2007. Chapter 11. Arid and semi-arid ecosystems. Pp. 158-183. In: Veblen, T.T., K. R. Young & A. R. Orme (eds.) The Physical Geography of South America, Oxford University Press: Oxford, UK, 368 p.
  • 95. Dillon, M.O., T. Tu, A. Soejima, T. Yi, Z. Nie, A. Tye & J.Wen. 2007. Phylogeny of Nolana (Solanoideae-Solanaceae) inferred from granule-bound starch synthase I (GBSSIor Waxy) marker. Taxon 56: 1000-1011.
  • 96. Dillon, M.O. , S. Leiva, & V. Quipuscoa. 2007. Five new species of Nolana (Solanaceae-Nolaneae) from Peru and notes on the classification for additional taxa. Arnaldoa 14: 171-190.
  • 97. Dillon, M.O., G. Arancio, & F. Luebert. 2007. Five new species of Nolana (Solanaceae-Nolaneae) from Chile. Arnaldoa 14: 191-212.

  • [Environments] [Plant Families] [Database Activities] [Publications]
    [J. Francis Macbride & Flora of Peru Series]
    [Top of Page]