CLASSIFICATION OF HARD-WOODS 



47 



exposure to light : sapwood yellowish white : 

 odourless. Mulberry. Morus. 

 , (b) Vessels in summer wood small or minute, 

 usually solitary : heartwood cherry -red. 

 Coffee Tree, Gymnoclddus. 

 %XX% Pith-rays fine, but very conspicuous to the naked 

 eye : heartwood rose-red to brownish : sapwood 

 pale lemon or greenish white ; vessels open. 

 Honey-Locust, Gleditschia. ^ . 



JJJJJ Pith-rays rather coarse, lustrous : heartwood 

 brownish or greyish orange : sapwood broad, 

 yellowish : broad zone of very large open pores 



Fig. 33.— Transverse section of African Oak (Lophira aldta), a type of the Dipterocarpdcecc. 



in spring wood : vessels in autumn wood 1-5 

 together in segments of circles. Aildnihus. 

 ** Strikingly dendritic : pores in summer wood minute 

 or small, appearing as finely feathered hatchings on 

 tangential sections. 

 t Vessels 1-8 together : pith-rays fine, but distinct. 

 J Heartwood yellowish or greenish brown to black, 

 hard : sapwood narrow, yellowish. Laburnum. 

 %% Heartwood greenish or yellowish white, hard, 

 heavy : sapwood not differing. Hackberry. 

 Celtis. 



