GUIDE TO TIMBERS OF NIGERIA 85 



22a. Structure fine, pores small * . . . . . 23 



23. Surface dry . ' jr .-. . ; . . . . 44 

 23a. Surface sticky .... Adina, page 62 



24. Structure very prominent to the unaided eye . . 25 

 24a. Structure obscure (needs lens) .... 32 



25. Pores connected concentrically by light-coloured lines 



throughout the cross-section (not counting the 

 boundary line of the ring if present) . . ' . 26 

 25a. Pores isolated or in short oblique series only (not count- 

 ing the boundary line if present) ... 27 



26. Wood resembles a coarse-grained Mahogany with a 



yellow tinge, quartered surface glossy ; concentric 

 lines present throughout the whole cross-section and 

 very clear with lens (cf. tr. sec. fig. 5, PI. II) 



Garcinia, page 12 



26a. No resemblance to Mahogany ; concentric lines rather 

 wide, but in some species very obscure from want of 

 contrast, in others very prominent . . ..45 



27. Boundary a fine line of light-coloured tissue (sometimes 



interrupted) ....... 28 



27a. Boundary a zone of darker tissue (wood-fibres) . . 29 



28. Colour a warm, rich brown ; rays in tang. sec. (plank- 



wise) in parallel lines causing a " ripple " (lens : cf. 

 fig. 10, PL I, also tr. sec., fig. 3, PL II) 



Paradaniellia, page 35 

 28a. Colour neutral brown to nut-brown ; rays not in 



parallel ........ 30 



29. Colour whitish to greenish-yellow. Pores on cross- 



section (glass-papered) very prominent as light- 

 coloured points (cf. tr. sec., fig. 6, PL IV) 



Terminalia sp., page 55 

 29a. Colour brownish to Walnut-colour .... 35 



30. Pores isolated (except those on the boundaries of the 



ring) 41 



300. Pores connected in short, oblique series (cf. tr. sec., 



fig. 6, PL II) ... Chlorophora, page 73 



32. Colour reddish-brown ; rays red .... 48 

 32#. No reddish tinge ; rays not red . . . .33 



33. Colour Walnut ; much black matter in the pores which 



sometimes runs to prominent black streaks (gum- 

 galls) (cf. tr. sec., fig. 3, PL IV) . Lovoa, page 28 

 33a. Colour buff to dirty white, yellow or brown . . 34 



34. Buff to yellowish ; structure in cross-section very fine, 



pores very small ... . . 21 



34a. Dirty white to brownish ; pores coarse but few and wide 

 apart (cf. tr. sec., fig. 5, PL IV) 



Terminalia superba, page 53 



35. Pores apparently crowded to the unaided eye . . 47 



