26 GUIDE TO TIMBERS OF NIGERIA 



occasional pairs only. Contents, some amber and red globules. 



Rays on the limit of vision, very fine ; of one kind ; regular 

 in size and spacing, weak, often changing their direction slightly 

 from zone to zone (question of growth ?). Number per mm. 

 78, width about 0-05 mm. ; at intervals of 2-3 times their 

 own width. Proportion of the mass about one-quarter. 



Ground-tissue cells visible with macroscope ; apparently 

 contain crystals ; proportion of the mass rather less than half. 



Rings : apparently well defined by zones of denser and less 

 porous wood, contour very irregular (at least in specimen). 



Radial section. Shows much play of light as the specimen 

 is turned. Rays visible as narrow hoary bands up to 0-5 mm. 

 in width. The parenchyma appears as very numerous and 

 close hoary lines, straight or undulating. Vessels very rare, 

 mostly open ; linings shiny ; sometimes partially filled with 

 globules in varying shades of amber. 



Tangential section. As the radial, but the rays are just visible 

 as very fine spindle-shaped lines slightly less lustrous than 

 the ground-tissue ; not in parallel ; height about 0-5 mm. or 

 12 cells, by 1-2 rows, wide, mostly the former. Parenchyma 

 as above very prominent in certain lights. 



Density, No. 4035, 0-70 or about 43| Ib. per cubic foot. 



Pith ? SAPWOOD ? Unwin says (1920, p. 328), " white." 



Bark? 



Exterior of log under bark, smooth. 



Conservator's note (on G. Thompsonii). " A large tree of the 

 evergreen forest. The timber is known under the trade name 

 of Cedar." Unwin (p. 328) says, " not termite-proof." 



Khaya grandis, Stapf. Meliaceae. Syn. K. grandifolia, Stapf., 

 C.DC. (not K. grandifoliola, A.DC.). Gen. No. 1193. 



LOCALITIES. Nigeria, Ivory Coast, Congo. 



VERNACULAR NAMES. Akor ; Appapayi ; Asamogo ; Baffili 

 (supposed to be this species, see Unwin, 1919, p. 28) ; Digiten ; 

 Diki ; Dirinshi (Dirinshi Diki ?) ; Gadeau (com. to K. Senega- 

 lensis) ; Mahogany; Mahogany, African; Mahogany, Benin: 

 Mahogany, big-leaved ; Obon ; Odala ; Oganwo ; Ogwango ; 

 Ogwangu (com. to three sp.) ; Upono ; Wansanwah. 



NOTE. Unwin cites the names of Krubua and Okunmankra 

 in connection with an " Appapayayi " as a species of Khaya. 



