A New Sporiferous Spike. 29 



EXPLANATION OF THE FIGURES. 



Plate. Fig. i. Longitudinal Section of the Spike, three times the 



natural size. 



s. Central Cylinder or Stele of the Axis, 



e. Cortex of the axis, 



a, b,f Sterile bracts. 



d. do. cut transversely, 

 g. Sporangiophores. 



h. do. cut transversely, 



sp. Sporangia with spores. 



Fig. 2. Enlarged view of the base of the bract f Fig. t at its 

 junction with the axis. 



s. Central Cylinder or Stele of the Axis. 



e. Inner portion of Cortex of Axis. 



a. Outer do. do. 



b. Upper portion of base of bract, 

 d. Lower do. do. 



Fig. 3. Sporangia with Spores. 



a. Probable point of attachment to Sporangiophore. 



b. Wall of Sporangium. 



c. Spores. 



Fig. 4. Surface view of the Wall of a sporangium. 



