PLATE 65 
1. —Portion of ring of concentric medullary bundles in the axis of inflorescence of 
Ricinus communis. Ordinary vascular tissue at the top. Safranin stain. X160. 
2. —Group of concentric medullary bundles in a branch-gap of Ricinus communis. 
Ordinary bundles (out of focus) at top (right and left) on edges of the gap. Section 
is free-hand and unstained. X75. 
