Fig. 384. — Gnelum gnetnon: transverse section of central part of a root 6 mm. in 

 diameter, showing a single row of primary xylem cells, with protoxylem two cells wide 

 at the extreme tips; X175. 



Fig. 385. — Gnetum gnetnon: transverse section of peripheral part of bundle of root; 

 Xi7S. 



