HYBRIDS OF JUGLANS. 



51 



Fig. 17. Short secreting trichomes of Juglans call) 'or n'u-a < Jaglans regia,F>, plant C: a toe, origin 

 and growth of trichome previous to separation from epidermis (X 840)'; d and e, separation of 

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

 (X1200); /(,2-celled trichome (X 840); /.second divisionof trichome; ,y,3-celled trichome (X 1200): 

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

 chomes in place, 



