Glossary of "Evolution of Plants (2nd ed.)" by Willis & McElwain (2014)
- The loss of structures from the stem of the plant following the growth of a layer of specialized cells. Usually applied to the loss of leaves from plants with seasonal change in climate.
- Willis, K. J. & McElwain, J. C. 2014. The Evolution of Plants, 2nd ed. -ix + 398 pp. Oxford University Press, Oxford.