Established for the study of internal structure of plant, this section has so far conducted studies on wood anatomy of more than 135 plants species of the country. It continues to serve different law enforcement agencies of the government such as Nepal Police and Department of Forests for identifying species from the wood samples confiscated during the illegal trade and smuggling. There are about 1,190 wood samples and about 3350 permanent slides of different woody plants at ‘KATH’ Xylarium.
This section also provides wood identification services to District forest offices, traders, farmers, researchers and students. The study on internal structure of wood helps the species in identification, qualitative and quantitative analysis of wood and fibers.