102 



N.Hartz); loc.ign. (July 6, 1892, N.Hartz). Spitzbergen: Tempelbay 

 (July 17, 1882, Nathorst). Norway: Palvand (F. Borgesen). 



The anatomy of this form has recently been exhaustively 

 investigated by K. Linsbacer; therefore I shall here make only 

 a few supplementary remarks. Stomata may occur on the upper 



Fig. 18. Cassiope tetraffona. 

 Microtome-section through a bud. (Phot.) 



