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Fern speciation and biogeography

Published online by Cambridge University Press:  05 December 2011

Rolla Tryon
Rolla Tryon
Affiliation:
The Gray Herbarium, Harvard University, 22 Divinity Avenue, Cambridge, Mass. 02138, U.S.A.
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Synopsis

The most common kinds of speciation result in new species that initially have a small range. These will develop a limited or an extensive range depending upon the geographic extent of the environment to which they are adapted. A significant element in the extent of the potential range of a new species is the adaptation inherited from the parental species. Selection of a parental species for a local environment at one site can lead to a narrow ecological adaptation and often to a limited potential range. These species are likely to produce derived ones that also have a limited range, and these derivates will increase the regional species endemism and diversity. Selection of a parental species for migration to other sites can lead to a broader ecological adaptation and often to a broad potential range. These species are more likely to produce derived ones that also have an extensive range, and these derivates will increase regional species diversity.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 86: The Biology of Pteridophytes , 1985 , pp. 353 - 360
Copyright
Copyright © Royal Society of Edinburgh 1985

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References

Adams, C. D. 1957. Observations of the fern flora of Fernando Po. J. Ecol. 45, 479–494.CrossRefGoogle Scholar
Butters, F. K. and Tryon, R. M. 1948. A fertile mutant of a Woodsia hybrid. Am. J. Bot. 35, 132.CrossRefGoogle Scholar
Conant, D. S. 1976. Ecogeographic and systematic studies in American Cyatheaceae. Ph.D. Thesis, Harvard University.Google Scholar
Conant, D. S. 1983. A revision of the genus Ahophila (Cyatheaceae) in the Americas. J. Arnold Arbor. 64, 333–382.CrossRefGoogle Scholar
Conant, D. S. and Cooper-Driver, G. 1980. Autogamous allohomoploidy in Ahophila and Nephelea (Cyatheaceae): a new hypothesis for speciation in homoploid homosporous ferns. Am. J. Bot. 67, 1269–1288.CrossRefGoogle Scholar
Lovis, J. D., Brownsey, P. J., Sleep, A. and Shivas, M. G. 1972. The origin of Asplenium balearicum. Br. Fern Gaz. 10, 263–268.Google Scholar
Meyer, D. E. 1981. Phyllitis hybrida. Berlin: privately published.Google Scholar
Page, C. N. 1982. The ferns of Britain and Ireland. Cambridge University Press.Google Scholar
Reichstein, T. 1981. Hybrids in European Aspleniaceae (Pteridophyta). Bot. Helv. 91, 89–139.Google Scholar
Shivas, M. G. 1969. A cytotaxonomic study of the Asplenium Adiantum-nigrum complex. Br. Fern Gaz. 10, 68–80.Google Scholar
Sinha, B. M. B. and Mantoxi, I. 1970. Cytotaxonomic studies in the Adiantum caudatum complex of Africa and Asia. Bot. J. Linn. Soc. 63, 247–264.CrossRefGoogle Scholar
Tryon, A. 1957. A revision of the fern genus Pellaea section Pellaea. Ann. Mo. Bot. Gdn 44, 125–193.CrossRefGoogle Scholar
Tryon, R. 1971a. The process of evolutionary migration in species of Selaginella. Brittonia 23, 89–100.CrossRefGoogle Scholar
Tryon, R. 1971b. The American tree ferns allied to Sphaeropteris horrida. Rhodora 73, 1–19.Google Scholar
Tryon, R. 1979. Biogeography of the Antillean fern flora. In Plants and Islands, ed. Bramwell, D., pp. 55–68. London: Academic Press.Google Scholar
Tryon, R. and Conant, D. S. 1975. The ferns of Brazilian Amazonia. Acta Amazonica 5, 23–34.CrossRefGoogle Scholar