Models Illustrative of Phyllotaxis

Abstract

PROF. PARKER's note upon this subject induces me to mention a rough-and-ready contrivance, which I found serviceable when lecturing on this subject. This consisted merely of the framework of a collapsible opera-hat, or of two or three superposed. It is easy to attach stiff labels to these in any desired order, and easy to illustrate undeveloped or developed internodes, as the case may be. I have used the joints of an old telescope for similar purposes. Of course these are “makeshifts” only, but they are available when better things are not at hand.