HYBRIDS OF JUGLANS. 



51 



Fig. 17.— Short secreting trichomes of J^ufiriaJiscaK/orntca X Juglans regia, F 2, plant C: a toe, origin 

 and growth of trichome previous to separation from epidermis (x 840);; tJ and e, separation of 

 triohome rudiment from epidermis (X 1200); /, 1-celled stage (X 840); g, first divison of trichome 

 (X1200); /;, 2-celled trichome (X 840); i, second division of trichome; ^'i 3-celled trichome (X 1200); 

 /,-, third cell-division (x 1200); I, transverse section of leaf, showing long and short secreting tri. 

 chomes in place. 



