The winter resting stages of 17 species of Ericaceae are described, figured, and analyzed. From this analysis, the following deductions were made: (1) Each species has a fairly definite winter resting stage. (2) As rates of development vary from species to species, the winter resting stage is not in all cases related to the time of full bloom. (3) The embryo sac and anther do not develop at similar rates; hence, for any stage in the development of one, there is not a definite accompanying stage in the development of the other. (4) The Ericaceae were not evolved in a climate which had the marked periodicity and extreme cold characteristic of our present north temperate zone.
No takes yet. Share an insight, caveat, or question.
Bell et al. (1955) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: