Vascular Anatomy of Platycerium. 
3i 7 
Fig. 4 .—Platycerium athiopicum. A series of transverse sections of the 
rhizome arranged from below upwards: 1-20 show base of nest-leaf; 18-32 
show formation of leaf-trace of foliage-leaf; 26 shows base of petiole of 
foliage-leaf ; a, rootlets surrounded by sclerenchyma. 
In arranging the figures, the orientation of the members of the series has 
not been strictly maintained ; e.g. No. 24 is rotated 90°, and Nos. 4 and 5 have 
been transposed. 
