INDUSTRIAL PLANTS 



74. Pseudo-woods, as wc have seen, may be defined as 

 more or less wood-like materials which, however, show no 

 trace of pith rays or annual rings. 



Under the name porcvpiiie-wond the outer harder part of 

 I 



Fig, 260. — Norway 8prucp (I'u-ni r.rrr/.su, Pine Fainiij-. I'liKiaa). 1, twig 

 bearing staminati." Ilowcrs. '2, twin l>pa.rinf; a. iiiKtiUatc flower. 3, ripe 

 ff)iie. 4 (i, cone seales, hearing seeds. 7, seeds, with and without 

 win^. ,S, stamen, two views. It, h-af, entire and lait across, 1(1, seed- 

 ling, \\-ith seed-shell still attaehed. H, same, older. 12, a "pineapple 

 call" produeed l),v the spruei^ aphis {('Iiitiius nhiilis). (Willkonnn ) — 

 Tree growing 4,'j tii. I.all; liark reddish brown; Iea\-es dark grt-en, gl(»ss>-; 

 flowers purple; fruit l.irown. Native home, Europe. Alueh planted. 



