70 GUIDE TO TIMBERS OF NIGERIA 



the mass about one-third. Contents crystalline or granular. 



Rings not traceable at all, but zones of varying density are 

 visible to the naked eye ; contour regular. 



Radial section. Grain, open, the vessels having shining 

 linings, with granules and red resin globules. Parenchyma (a) 

 appears as hoary borders and tails to the pores. Rays very 

 conspicuous like those of Beech, of a dark, rich brown, but 

 dull. 



Tangential section as the radial, but the rays are obscure, 

 small, dark-coloured, spindle-shaped lines up to inch high ; 

 multiseriate, not in palissade. 



Pith ? Sapwood scarcely denned from the heartwood. 



BARK. Exterior rough, but not fissured, covered with light- 

 coloured excrescences. Colour, white over brown ; subjacent 

 layers chocolate-brown throughout. Lenticels not traceable. 

 Texture harsh, fracture granular ; smell, none ; adhesion to 

 trunk moderately strong. 



Section of bark : Thickness about J inch ; homogeneous ; 

 colour, chocolate ; scleroses prominent. Inner surface straight 

 in the grain ; brown ; shows the impressions of the rays. 



Density, No. 3610, 0-76, or about 47j Ib. per cu. ft. 



Ricinodendron africanus, Muell. Arg. 

 Euphorbiaceae. Gen. No. 6465. 



LOCALITIES. Sierra Leone, Gold Coast, Ivory Coast, Togo, 

 Carneroons, Nigeria, Gaboon, Uganda, Congo, Nile-land. 



VERNACULAR NAMES. Asama ; Asoma ; Assomah ; Awama; 

 Boi-feko; Bofeko ; Ehan ; Ekku (not Ekki, see Lophira) ; 

 Engessang ; Engessan ; Erimado ; Erimmado ; Esango ; 

 Essang ; Funfun ; Gbolei ; Haipi ; Hobo ; Hapi ; Hoho ; 

 Isain ; Issanguila ; Mougongome ; Munguella ; Nbob ; Njang- 

 sang ; Nsa-sana ; Ochwen, Okkwen, Okwcn (com. to R. 

 Rautenii, R. Heudelottii and Brachystegia) ; Okro Koods ; 

 Okwenseva (com. to R. Rautenii) ; Owama ; Owema ; Ozane- 

 guilia ; Poposi ; Puttuputtu (com. to R. Rautenii) ; Sanga 

 Sanga ; Sosau ; Tsain ; Wonjangasanga ; Wongasangii ; 

 Wood-oil-nu t-tree. 



Description of the wood from a specimen No. .'3001. sent by 

 the Government of Nigeria. Our specimen No. 2990 IIS. from 

 Uganda, authenticated by Mr. Dawc, agrees. 



