604 Pr ankerd.—Notes on the Occurrence of Multinucleate Cells . 
Literature cited. 
1. Arber, A. (T4): On Root Development in Stratiotes aloides, with special reference to the 
Occurrence of Amitosis in an Embryonic Tissue. Proc. Cambr. Phil. Soc., vol. xvii, Pt. 5. 
2. Beer, R. (’99) : On the Multinuclear Cells of some Grasses. Nat. Science, Dec., 1899. 
3. Carothers, I. E. (’ 07 ) : Development of Ovule and Female Gametophyte in Ginkgo biloba. 
Bot. Gaz., 43, p. ii6. 
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7 . Thompson, W. P. (T2): The Anatomy and Relationships of the Gnetales. I. The genus 
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Since the above was written I have discovered multinucleate cells in the pith, just above the 
nodes, of Polygonum Persicaria , in older parts of the stem, where these cells are rare or absent in 
the internodes. Most, if not all, the cells are at least binucleate, and some show as many as five 
nuclei in a single plane. This is of interest since it affords a striking instance of multinucleate cells 
existing in a specially active tissue capable of rapid growth, for it is just at the nodes that geotropic 
curvatures take place in this plant. 
