Four Nigerian trees; Tectona grandis (Linn.), Terminalia catappa (Linn.f.), Gmelina arborea(Roxb.), Delonix regia({Hook.}Raf.) were assessed on the basis of fibre dimensions and derived-fibre values. They were compared with those of Gmelina arborea currently certified suitable for paper making, Features relevant to pulping and paper making were discussed. The results showed that the mean fibre lengths were generally short ranging from 0.637 to 0.863mm. All species studied had Runkel ratios less than 1 and coefficient of flexibility ratios greater than 0.5, indicating that their fibres would make good strong papers. Slenderness ratios were generally low ranging from 19.20 to 43.226 mm. Terminalia catappa had values that were not significantly different from those of Gmelina arborea which has been in use for paper making.
