Phytogeography of the Pacific Coast of North America


  • Manuel Peinado Lorca Departamento de Biología Vegetal, Universidad de Alcalá
  • Miguel Ángel Macías Rodríguez Departamento de Ciencias Ambientales, CUCBA, Universidad de Guadalajara, Jalisco
  • Juan Luis Aguirre Martínez Cátedra de Medio Ambiente, Universidad de Alcalá
  • José Delgadillo Rodríguez Herbario BCMEX, Coronado, California



Biodiversity, Biogeography, floristic element, floristic provinces, Geoflora, Palaeobiogeography


This study was designed to explore floristic variation along the Pacific coast from Cook Inlet, Alaska (61º30’N), to the southern tip of Baja California, Mexico, at 23º02’N. Data corresponding to 965 phytosociological relevés (including 686 vascular plants) obtained by sampling 279 coastal sites were examined. Using an objective classification system (Average Linkage Clustering) and Sørensen’s index, floristic data acquired in fieldwork were related to the biogeographical regions of the study area. According to the worldwide distribution pattern of genera and species, the registered taxa were grouped into phytogeographical elements. These elements, along with the climatic classification of the sites and comparisons among the main coastal vegetation types, gave rise to a phytogeographical classification of the study area in which four regions (North American Boreal, Rocky Mountain, Californian and Xerophytic-Mexican) and eight floristic provin - ces were distinguished. Each province is characterized by its climate, changes in phytogeographic elements, the presence of endemic genera or species, and by its characteristic vegetation types. Floristic differences among provinces are related to palaeoclimatic and palaeogeographical events. The boreal and temperate provinces show high percentages of broadly distributed elements, whose origins can be found in the Boreotropical or Arctotertiary geoflora that dominated the Northern Hemisphere during the Tertiary. The floristically richest provinces are the three that occupy the Mediterranean zone, since these provinces harbour elements of the Arctotertiary and Madrotertiary geofloras. The flora of tropical Baja California is characterised by a high number of taxa related to Neotropical flora, especially to those showing links with South America.


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Abrams, L. 1925. The origin and geographical affinities of the flora of California. Ecology 6: 1-6. doi:10.2307/1929235

Abrams, L. & Ferris, R.S. 1980. Illustrated Flora of the Pacific States, Washington, Oregon, and California. Vol. I-IV. Stanford University Press. Stanford.

Axelrod. D.I. 1948. Climate and vegetation in western North America during middle Pliocene time. Evolution 2: 127-144. doi:10.2307/2405373

Axelrod, D.I. 1958. Evolution of the Madro-Tertiary Geoflora. The Botanical Review 24: 433-509. doi:10.1007/BF02872570

Axelrod, D.I. 1973. History of the Mediterranean ecosystems in California. In: Di Castri, F. & Mooney, H.A. (eds.), Mediterranean type ecosystems: origin and structure: 225-227. Springer-Verlag. Nueva York.

Axelrod, D.I. 1988. Outline history of California vegetation. In:¡ Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 139-194. California Native Plant Society. Davis.

Azevedo, J. & Morgan, D.L. 1974. Fog precipitation in coastal Californian forests. Ecology 55: 1135-1141. doi:10.2307/1940364

Bailey, R.G. 1995. Description of the ecoregions of the United States. 2nd ed. USDA Forest Service. Washington DC.

Barbour, M.G., De Jong, T.M. & Johnson, A.F. 1975. Additions and corrections to a review of North American Pacific Coast beach vegetation. Madroño 23: 130-134.

Barbour, M.G. & Johnson, A.F. 1988. Beach and dune. In: Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 223-262. California Native Plant Society. Davis.

Braun-Blanquet, J. 1979. Fitosociología. Bases para el estudio de las comunidades vegetales. Blume. Madrid.

Breckon, G.J. & Barbour, M.G. 1974. Review of North American Pacific Coast beach vegetation. Madroño 22: 333-360.

Brouillet, L. & Whetstone, R.D. 1993. Climate and Physiography. In: Flora of North America Editorial Committee (eds.), Flora of North America: North of Mexico 1: 15-46. Oxford University Press. Nueva York.

Brown, D.E., Reichenbacher, F. & Franson, S.E. 1998. A classification of North American Biotic Communities. University of Utah Press. Salt Lake City.

Budantsev, L.Y. 1992. Early stages of formation and dispersal of the temperate flora in the boreal region. The Botanical Review 58: 1-48. doi:10.1007/BF02858542

Calder, J.A. & Taylor, R.L. 1968. Flora of the Queen Charlotte Islands, I. Systematics of the vascular plants. Canada Dept. Agriculture. Ottawa.

Coates, A.G. 1996. The geologic evolution of the Central American isthmus. In: Obando, J.A. (ed.), Evolution and environment in tropical America: 21-56. University of Chicago Press. Chicago.

Cooper, W.S. 1936. The strand and dune flora of the Pacific Coast of North America: a geographic study. In: Goodspeed, T.H. (ed.), Essays in Geobotany: 141-187. University of California Press. Berkeley.

Crane, P.R. & Lidgard, S. 1989. Angiosperm diversification and paleolatitudinal gradients in Cretaceous floristic diversity. Science 246: 675-678. doi:10.1126/science.246.4930.675 PMid:17833420

Darlington, P.J. 1957. Zoogeography: the Geographical distributions of Animals. John Wiley & Sons. Nueva York.

Daubenmire, R. 1978. Plant Geography with special reference to North America. Academic Press. Londres.

Delcourt, P.A. & Delcourt, H.R. 1993. Paleoclimates, paleovegetation, and paleofloras during the Late Quaternary. In: Flora of North America Editorial Committee (eds.), Flora of North America: North of Mexico 1: 71-96. Oxford University Press. Nueva York.

Delgadillo, J. 1995. Introducción al conocimiento bioclimático, fitogeográfico y fitosociológico del Suroeste de Norteamérica (Estados Unidos y México). Ensenada.

Dice, L.R. 1943. The biotic provinces of North America. University of Michigan. Ann Arbor.

Dice, L.R. 1945. Measures of ecologic association between species. Ecology 26(3): 297-302. doi:10.2307/1932409

Digby, P.G.N. & Kempton, R.A. 1987. Multivariate Analysis of Ecological Communities. Chapman and Hall. Londres.

Emery, K.O. & Uchupi, E. 1984. The geology of the Atlantic Ocean. Springer-Verlag. Nueva York.

Flora of North America Editorial Committee. 1993-2008. Flora of North America: North of Mexico. Oxford University Press. Nueva York.

Franklin, J.F. & Dyrness, C.T. 1988. Natural vegetation of Oregon and Washington. 2nd ed. Oregon State University Press. Corvallis.

Galán de Mera, A. & Vicente Orellana, J.A. (2007): Cronosequences of vegetation- a bioclimatic theory for interpreting the patterns of relic vegetation types. Phytocoenologia 37: 471-494. doi:10.1127/0340-269X/2007/0037-0471

Gentry, A.H. 1982. Neotropical floristic diversity. Annals of the Missouri Botanical Gardens 69: 557-593. doi:10.2307/2399084

Gentry, S.H. 1978. The agaves of Baja California. Occasional Papers of the California Academy of Science 130: 1-123.

Gjærevoll, O. 1980, A comparison between the alpine plant communities of Alaska and Scandinavia. Acta Phytogeographyca Suecica 68: 83-88.

Gleason, H.A. & Cronquist, A. 1964. The natural geography of plants. Columbia University Press. Nueva York.

Goldblatt, P. 1993. Biological relations between Africa and South America. Yale University Press. New Haven.

Good, R. 1974. The geography of the flowering plants, 4th ed. Longman. Londres.

Graham, A. 1999. Late Cretaceous and Cenozoic history of North American vegetation north of Mexico. Oxford University Press. Nueva York.

Grewell B.J., Callaway J.C. & Ferren W.R. 2007. Estuarine Wetlands. In: Barbour, M.G. & al. (eds.), Terrestrial Vegetation of California, 3ª ed.: 124-179. University of California Press. Berkeley.

Hagen, J.B. 1986. Ecologists and taxonomists: divergent traditions in twentieth-century plant geography. Journal Historical Biology 19: 197-214. doi:10.1007/BF00138876

Hallam, A. 1994. An outline of Phanerozoic Biogeography. Oxford University Press. Oxford.

Heiser, C.B., Smith, D.M., Clevenger, S.B. & Martin, W.C. 1966. The North American Sunflowers (Helianthus). Memoirs of the Torrey Botanical Club 22(3): 1-218.

Hickman, J.C. 1993. The Jepson Manual. Higher Plants of California. University of California Press. Berkeley.

Howell, J.T. 1957. The California flora and its province. Leaflets Western Botany 8: 133-138. M. Peinado & al.

Hultén, E. 1968. Flora of Alaska and neighbouring territories. Stanford University Press. Stanford.

Johnson, A.F. 1977. A survey of the strand and dune vegetation along the Pacific and southern coasts of Baja California, Mexico. Journal of Biogeography 7: 83-99. doi:10.2307/3038131

Keeler-Wolf, T. 2007. The History of Vegetation Classification and Mapping in California. In: Barbour, M.G. & al. (eds.), Terrestrial Vegetation of California, 3ª ed.: 1-42. California Native Plant Society. Davis.

Kent, M. & Coker, P. 1992. Vegetation Description and Analysis. A Practical Approach. Belhaven Press. Londres.

Klinka, K., Krajina, V.J., Ceska, A. & Scagel, A.M. 1995. Indicator Plants of British Columbia, 2nd ed. University of British Columbia Press. Vancouver.

Klinkenberg, B. (ed.). 2008. E-Flora BC: Electronic Atlas of the Plants of British Columbia.

Kumler, M.L. 1969. Plant succession on the sand dunes of the Oregon coast. Ecology 50(4): 695-704. doi:10.2307/1936262

Latham, R.E. & Ricklefs, R.E. 1993. Continental comparisons of temperate-zone tree species diversity. In: Ricklefs, R.E. & Schluter, D. (eds.), Species diversity in ecological communities: historical and geographical perspectives: 294-314. Chicago University Press. Chicago.

Legendre, P. & Legendre, L. 1987. Developments in Numerical Ecology. NATO ASI Series G14. Springer-Verlag. Berlín.

Mabberley, D.J. 2002. The plant-book: a portable dictionary of the vascular plants, 2ª ed. rev. Cambridge University Press. Cambridge.

Macdonald, K.B. 1988. Coastal salt marsh. In: Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 263-294. California Native Plant Society. Davis.

Macdonald, K.B. & Barbour M.G. 1974. Beach and salt marsh vegetation of the North American Pacific Coast. In: Reimold, R.J. & Queen, W.H. (eds.), Ecology of halophytes: 175-233. Academic Press. Nueva York.

MacKinnon, A., Pojar J. & Coupé, R. 1994. Plants of northern British Columbia. Lone Pine Publishers. Vancouver.

Major, J. 1988. California climate in relation to vegetation In: Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 11-74. California Native Plant Society. Davis.

Matthews, J.V., Anderson, T.W., Boyko-Diakonow, M., Mathewes, R.W., McAndrews, J.H., Mott, R.J., Richard, P.J.H., Ritchie, J.C. & Schweger, C.E. 1989. Quaternary environments in Canada as documented by paleobotanical case histories. In: Fulton, R.J. (ed.), Quaternary Geology of Canada and Greenland: 481-539. Otawa.

McLaughlin, S.P. 1989. Natural floristic areas of the western United States. Journal of Biogeography 16: 239-248. doi:10.2307/2845260

Meidinger, D. & Pojar, J. 1991. Ecosystems of British Columbia. BC Ministry of Forests, Special Report Series 6. Victoria.

Merriam, C.H. 1890. Results of a Biological Survey of the San Francisco Mountains Region and Desert of the Little Colorado in Arizona. USDA, North American Fauna, 3. Washington DC.

Merriam, C.H. 1898. Life-zones and Crop-zones of the United States. USDA, Division of Biological Survey, Bulletin 10. Washington DC.

Minch, J., Minch, E., Minch, J. & Ledesma Vázquez, J. 2003. Caminos de Baja California. John Minch & Associates. Mission Viejo.

Muller J. 1981. Fossil pollen records of extant angiosperms. The Botanical Review 47: 1-142. doi:10.1007/BF02860537

Munz, P.A. & Keck, D.D. 1973. A California Flora and Supplement. University of California Press. Berkeley.

Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69-114.

Parrish, J.T. 1993. The palaeogeography of the opening South Atlantic. In: George, W. & Lavocat R., R. (eds.), The Africa-South America connection: 8-27. Clarendon Press. Oxford.

Peck, M.E. 1941. A Manual of the higher plants of Oregon. Binfords & Mort. Portland.

Peinado, M., Alcaraz, F. & Martínez-Parras, J.M. 1992. Vegetation of Southeastern Spain. J. Cramer. Berlín.

Peinado, M., Alcaraz, F., Aguirre, J.L. & Álvarez, J. 1994a. Vegetation formations and associations of the zonobiomes along the North American Pacific coast. Vegetatio 114: 123-135.

Peinado, M., Alcaraz, F., Delgadillo, J. & Aguado, I. 1994b. Fitogeografía de la península de Baja California, México. Anales del Jardín Botánico de Madrid 51(2): 255-277.

Peinado, M., Alcaraz, F., Aguirre, J.L., Delgadillo, J. & Álvarez, J. 1995a. Similarity of zonation within Californian-Baja Californian and Mediterranean salt marshes. The Southwestern Naturalist 40: 388-405.

Peinado, M., Alcaraz, F., Delgadillo, J., Aguirre, J.L. & Aguado, I. 1995b. Shrubland formations and associations in Mediterranean- desert transitional zones of northwestern Baja California. Vegetatio 117: 165-179. doi:10.1007/BF00045507

Peinado, M, Alcaraz F, Delgadillo J. 1995c. Syntaxonomy of some halophilous communities of North and Central America. Phytocoenologia 25: 23-31.

Peinado, M., Aguirre, J.L. & Delgadillo, J. 1997a. Phytosociological, bioclimatic and biogeographical classification of woody climax communities of western North America. Journal of Vegetation Science 8: 505-528. doi:10.2307/3237202

Peinado, M., Alcaraz, F., Aguirre, J.L. & Martínez-Parras, J.M. 1997b.Vegetation formations and associations of the zonobiomes along the North American Pacific coast: from Northern California to Alaska. Plant Ecology 137: 151-202. doi:10.1023/A:1009748330070

Peinado, M., Aguirre, J.L. & de la Cruz, M. 1998. A phytosociological survey of the boreal forest (Vaccinio-Piceetea) in North America. Plant Ecology 129: 29-47. doi:10.1023/A:1009711818203

Peinado, M., Delgadillo, J. & Aguirre, J.L. 2005a. Plant associations of the El Vizcaíno Biosphere Reserve (Baja California Sur, México). The Southwestern Naturalist 50(2): 129-149. doi:10.1894/0038-4909(2005)050[0129:PAOEVB]2.0.CO;2

Peinado, M., Aguirre, J.L. & Martínez-Parras, J.M. 2005b. A phytosociological survey of the chionophilous communities of Western North America. Part temperate and Mediterranean associations. Plant Ecology 180: 187-241. doi:10.1007/s11258-005-3027-8

Peinado, M., Aguirre, J.L., Delgadillo, J. & Macías, MA. 2007. Zonobiomes, zonoecotones and azonal vegetation along the Pacific coast of North America. Plant Ecology 191: 221-252. doi:10.1007/s11258-006-9239-8

Peinado, M., Aguirre, J.L., Delgadillo, J. & Macías, M.A. 2008. A phytosociological and phytogeographical survey of the coastal vegetation of western North America. Part I: plant communities of Baja California, Mexico. Plant Ecology 196: 27-60. doi:10.1007/s11258-007-9334-5

Pickart, A.J. & Barbour, M.G. 2007. Beach and Dune. In: Barbour, M.G. & al. (eds.), Terrestrial Vegetation of California, 3ª ed.: 155-173. California Native Plant Society. Davis.

Pojar, J. & MacKinnon, A. 1994. Plants of coastal British Columbia. Lone Pine Publ. Vancouver.

Purer, E.A. 1936. Studies of certain coastal sand dune plants of southern California. Ecological Monographs 6: 4-85. doi:10.2307/1942994

Qian, H. 1999. Floristic analysis of vascular plant genera of North America north of Mexico: characteristics of phytogeography. Journal of Biogeography 26: 1307-1321. doi:10.1046/j.1365-2699.1999.00367.x

Raven, P.H. 1963. Amphitropical relationships in the flora of North and South America. Quarterly Review of Biology 38: 151-177. doi:10.1086/403797

Raven, P.H. 1988. The California flora. In: Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 109-138. California Native Plant Society. Davis.

Raven, P.H. & Axelrod, D.I. 1974. Angiosperm biogeography and past continental movements. Annals Missouri Botanical Gardens 61: 539-673. doi:10.2307/2395021

Raven, P.H., & Axelrod, D.I. 1978. Origins and relationships of the California flora. University of California Publications in Botany 72: 1-134.

Rivas-Martínez, S. 2007. Mapa de series, geoseries y geopermaseries de vegetación de España (Memoria del Mapa de Vegetación Potencial de España), Parte I. Itinera Geobotanica 17: 5-436.

Rivas-Martínez, S., Sánchez-Mata, D. & Costa, M. 1999. North American boreal and western temperate forest vegetation. Itinera Geobotanica 12: 5-316.

Rzedowski, J. 1978. Vegetación de México. Limusa, México D.F.

Shreve, F. 1936. The transition from desert to chaparral in Baja California. Madroño 3: 257-264.

Shreve, F. & Wiggins, I.L. 1964. Vegetation and flora of the Sonoran Desert. Stanford University Press. Stanford.

Sørensen, T. 1948. A method of establishing groups of equal amplitude in plant sociology based on similarity of species content. Biologiske Scrifter Copenhagen 5: 1-34.

Stebbins, G.L. & Major, D. 1965. Endemism and speciation in the California flora. Ecological Monographs 35: 1-35. doi:10.2307/1942216

Stott, P. 1981. Historical plant geography. George Allen & Unwin. Londres.

Takhtajan, A. 1986. Floristic regions of the world. University of California Press. Berkeley.

Taylor, D.W. 1990, Paleobiogeographic relationships of angiosperms from the Cretaceous and early Tertiary of the North American Area. Biological Review 56: 279-417.

Thorne, R.F. 1993. Phytogeography. In: Flora of North America Editorial Committee. (eds.), Flora of North America: North of Mexico 1: 132-153. Oxford University Press. Nueva York.

Thornthwaite, C.W. 1941. USDA atlas of climatic types of the United States, 1900-1939. Misc. Pub. US Government Printing Office, Washington DC.

Tiffney, B.H. 1985a. Perspectives on the origin of the floristic similarity between eastern Asia and eastern North America. Journal of the Arnold Arboretum 66: 73-94.

Tiffney, B.H. 1985b. The Eocene North Atlantic land bridge: its importance in Tertiary and modern phytogeography of the Northern Hemisphere. Journal of the Arnold Arboretum 66: 243-273.

Turner, R.M. & Brown, D.E. 1982. Sonoran Desert scrub. Desert Plants 4: 181-222.

Udvardy, M.D.F. 1975a. World biogeographical provinces. Map scale 1: 39,629,000. Coevolution Quarterly. Sausalito.

Udvardy, M.D.F. 1975b. A classification of the fitogeographical provinces of the world. International Union for Conservation of Nature and Natural Resources. Morges.

USDA NRCS. 2008. The PLANTS Database, Version 3.5. Data compiled from various sources by Mark W. Skinner. National Plant Data Center. Baton Rouge.

Van Dyke, E.C. 1919. The distribution of insects in western North America. Annals of the Entomological Society of America 12: 1-12.

Viereck, L.A. & Little, E.L. 1991. Alaska trees and shrubs, 3ª ed. University of Alaska Press. Fairbanks.

Walter, H. 1985. Vegetation of the Earth and Ecological Systems of the Geobiosphere. 3ª ed. Springer-Verlag. Berlín.

Walter, H. & Lieth, H. 1967. Klimadiagramm-Welatlas. VEB Gustav Fischer. Jena.

Westhoff, V. & van der Maarel, E. 1973. The Braun-Blanquet approach. In: Whittaker, R.H. (ed.), Ordination and classification of communities: 617-626. Dr. W Junk. La Haya.

Whittaker, R.H. & Niering, W.A. 1964. Vegetation of the Santa Catalina Mountains, Arizona. I. Ecological classification and distribution of species. Journal of the Arizona-Nevada Academy of Science 3: 9-34.

Wiedemann, A.M. 1966. Contributions to the Plant Ecology of the Oregon coastal sand dunes. Ph. D. Thesis, Oregon State University, Corvallis.

Wielgorskaya, T. 1995. Dictionary of generic names of seed plants. Columbia University Press. Nueva York.

Wiggins, I.L. 1969. Observations on the Vizcaíno Desert and its biota. Proceedings of the California Academy of Sciences, 36: 317-346.

Wiggins, I.L. 1980. Flora of Baja California. Stanford University Press. Stanford.

Williams, W.T. & Potter, J.R. 1972. The coastal strand community at Morro Bay State Park. Bulletin Torrey Botanical Club 99: 163-171. doi:10.2307/2484570

Wolfe, J.A. 1975. Some aspects of plant geography of the Northern Hemisphere during the Late Cretaceous and Tertiary. Annals Missouri Botanical Gardens 62: 264-279. doi:10.2307/2395198

Wood, C.E. 1972. Morphology and phytogeography: the classical approach to the study of disjunctions. Annals Missouri Botanical Gardens 59: 107-124. doi:10.2307/2394747

Yurtsev, B.A. 1974. Problems of the botanical geography of Northeastern Asia. Nauka. Leningrado.

Zinke, P.J. 1988. The redwood forest and associated north coast forests. In: Barbour, M.G. & Major, J. (eds.), Terrestrial vegetation of California: 679-698. California Native Plant Society. Davis.




How to Cite

Peinado Lorca, M., Macías Rodríguez, M. Ángel, Aguirre Martínez, J. L., & Delgadillo Rodríguez, J. (2009). Phytogeography of the Pacific Coast of North America. Anales Del Jardín Botánico De Madrid, 66(2), 151–194.