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XIX.—Quantitative Evolution. XXI. Some Correlations in the Present Results of Production Rates

Published online by Cambridge University Press:  11 June 2012

James Small
James Small
Affiliation:
Queen's University, Belfast.
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Synopsis

Two series of logarithmic expansion systems are described, with × 1·6 as the rate of increase in numbers of new monotypic genera correlated with a rate of × 2·0 for increase in total numbers of species. These series are discussed in relation to current numbers for monotypic genera, total genera, and total species in 36 of the largest 45 families of flowering plants.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 64 , Issue 4 , 1952 , pp. 367 - 383
Copyright
Copyright © Royal Society of Edinburgh 1952

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References

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