PLATE XIV. 



Illustrations of the nature of the ramentaceous investiture of the genus 



Cycadella. 



Figs. I. Epidermal cells of a petiole giving origin to the ramentaceous chaff. 



2. Ramentum as seen between two leaf bases within the armor. 



3. Illustration of the relative great length of the chaffj' hairs, which might 



be traced much farther. The one on the left is cut obliquely, 

 showing the parallel cells. 



4. 5. Cross sections of the chaff showing their flat, sharp-edged, multi- 



cellular character. 



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