PSOPHOCARPUS TETRAGONOLOBUS (POIS CARRe) i8i 



[Sketches by P. dc Snr 



nay. 



Fig. 28 -Sections of excrescences on the roots of Pois 



by Heterodera radicicola. i, eel-wo^' "" ""^ '^^^'' "' ^"'' ''''"'' ''''''^^^ 



ssue with cavities and eggs. 



.repined tissue; ., hyper.rophied d"" "'""'' ""■^ ■"'"=■ °' ■"■■•" 



