298 



PITYEAE 



[CH. 



FIG. 491. A F, Antarcticoxylon Priestleyi. A, B, transverse sections of the 

 xylem; a, small tracheids simulating protoxylem; x, xylem at the edge of 

 the pith. C, transverse section showing leaf-traces, I, a, b. D, leaf-trace 

 with short tracheids, t, in the pith; s, sclerous cells. E, tangential section. 

 F, pith in longitudinal section. G, Pityosporites antarcticus ; see Vol. IV. 

 (All the sections are in the British Museum.) 



