COMPLIMENTARY 
NEW SERIES VOL IV 
NO. 16 
ARNOLD ARBORETUM 
HARVARD UNIVERSITY 
BULLETIN 
OF 
POPULAR INFORMATION 
JAMAICA PLAIN, MASS. NOVEMBER 7, 1918 
In the early numbers of the present volume of the Bulletin the ef- 
fects of the severe winter on many plants in the Arboretum was dis- 
cussed. Several plants which were then believed to be dead produced 
leaves in June and some are now apparently in good health; others 
which were only killed to the ground have grown again from the 
stumps and the damage by the winter has been less severe than it was 
believed to be in May. 
Oaks. In the third week of May the Willow Oak {Quercus Phellos), 
the southern Overcup Oak (Q. lyrata), the Spanish or Red Oak of 
the south (Q. rubra or falcata), the so-called Turkey Oak of eastern 
Europe {Q. Cerris), the hybrid Q. heterophylla from the middle states, 
and a little Oak from Stone Mountain, Georgia {Q. georgiana), appeared 
to be dead. Six weeks later they were covered with healthy leaves, 
with the exception of the last which after a hard struggle for life 
finally died. Fortunately this species is represented in the Arboretum 
by a healthy young specimen which was not injured by the winter. A 
fine specimen of the weeping form of one of the European Oaks {Q. 
Robur var. pendula), which appeared in the spring to have been ruined, 
escaped with the loss of a single branch. A vigorous species of the 
native Black Oak (Q. velutina), one of the common trees in Massachu- 
setts, growing with others in the Oak collection, was killed, showing 
that exceptional cold like that of the past winter may kill even 
the hardiest native trees. This is shown, too, in the fact that two 
trees of the Sour Gum {Nyssa sylvatica) were killed in the group by the 
little pond near the junction of the Meadow and the Bussey Hill Roads. 
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