1906.] A Tree-Strangling Fungus. 691 



with irregularly toothed margins. When it happens to be grow- 

 ing near to a plant of heather or ling, it grows up round the 

 stem, to which it adheres very closely, giving off from time to 

 time a loose frill as it ascends. It extends up the stem for a 



Ash Sapling Strangled by Thelephora. 



distance of six inches to a fcot or more, and in course of time 

 kills the stem it has encircled. 



Young conifers planted in such situations often suffer severely, 

 it being no uncommon sight to see almost every tree encircled 

 by the fungus, and small examples are often entirely enveloped 

 in its folds, 



I I I 2 



