Niklas, K. J. (1988) Biophysical limitations on plant form and evolution. In Plant Evolutionary Biology, eds. Gottlieb, L. D. & Jain, S. K. (Chapman and Hall, London), pp. 185–220.

Niklas, K. J. (1986) Computer-simulated plant evolution. Sci. Am. 254, 78–86.

Niklas, K. J. & Kerchner, V. (1984) Mechanical and photosynthetic constraints on the evolution of plant shape. Paleobiology 10, 79–101.

Niklas, K. J., Tiffney, B. H. & Knoll, A. H. (1980) Apparent changes in the diversity of fossil plants: A preliminary assessment. In Evolutionary Biology, eds. Hecht, M., Steere, W. & Wallace, B. (Plenum, New York), Vol. 12, pp. 1–89.

Nobel, P. S. (1983) Biophysical Plant Physiology and Ecology (Freeman, New York), p. 608.

Odell, G. M., Oster, G., Alberch, P. & Burnside, B. (1981) The mechanical basis of morphogenesis. I. Epithelial folding and invagination. Dev. Biol. 85, 446–462.

Okubo, A. & Levin, S. A. (1989) A theoretical framework for data analysis of wind dispersal of seeds and pollen. Ecology 70, 329–338.

Oster, G. F., Odell, G. & Alberch, P. (1980) Mechanics, morphogenesis and evolution. In Lectures on Mathematics in the Life Sciences, ed. Oster, G. (Am. Math. Soc., Providence, RI), pp. 165–255.


Provine, W. B. (1986) Sewall Wright and Evolutionary Biology (Univ. of Chicago Press, Chicago), p. 545.


Scharloo, W. (1991) Canalization, genetic and developmental aspects. Annu. Rev. Ecol. Syst. 22, 265–294.

Schmid, B. (1993) Phenotypic variation in plants. Evol. Trends Plants 6, 45–60.

Sepkoski, J. J. (1979) A kinetic model of Phanerozoic taxonomic diversty. II. Early Phanerozoic families and multiple equilibria. Paleobiology 5, 222–251.

Snedecor, G. W. & Cochran, W. G. (1980) Statistical Methods (Iowa State Univ. Press, Ames), 7th Ed., p. 507.

Sokal, R. R. & Rohlf, F. J. (1981) Biometry: The Principles and Practice of Statistics in Biological Research (Freeman, San Francisco), p. 859.

Stewart, W. N. & Rothwell, G. W. (1993) Paleobotany and the Evolution of Plants (Cambridge Univ. Press, Cambridge, U.K.), p. 521.

Sultan, S. E. (1987) Evolutionary implications of phenotypic plasticity in plants. Evol. Ecol. 21, 127–178.


Taylor, T. N. & Taylor, E. L. (1993) The Biology and Evolution of Fossil Plants (Prentice-Hall, Englewood Cliffs, NJ), p. 982.

Thomas, R. D. K. & Reif, W.-E. (1993) The skeleton space: A finite set of organic designs. Evolution 47, 341–360.

Tiffney, B. H. (1981) Diversity and major events in the evolution of land plants. In Paleobotany, Paleoecology, and Evolution, ed. Niklas, K. J. (Praeger, New York), Vol. 2, pp. 193–230.


Van Tienderen, P. H. (1990) Morphological variation in Plantago lanceolata : limits of plasticity. Evol. Trends Plants 4, 35–43.


Wright, S. (1932) The role of mutation, inbreeding, crossbreeding, and selection in evolution. Proc. Int. Congr. Genet. 6th 1, 356–366.

Wright, S. (1931) Evolution in Mendelian population. Genetics 16, 97–159.



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