152 Wisconsin Academy of Sciences, Arts , and Letters. 
Poa nemoralis. 
The Wood meadow grass is now classed among our good 
grasses for shaded pastures. It is particularly valuable for 
shaded lawns. 
The seedlings are very similar to those of blue grass. They 
can generally be distinguished by their wider leaves and more 
vivid green color. 
Spores from rye produced no infection on this grass. The 
experiments with conidia from blue grass were doubtful in their 
results and quite interesting. As seen from the table, nineteen 
experiments were made in which spores from blue grass were 
sown upon the seedlings of P. nemoralis. The inoculated seed¬ 
lings in eleven of these experiments became infected with mil¬ 
dew; in the other cases there were no signs of infection. None 
of the uninoculated seedlings in any experiment became in¬ 
fected. In six of the experiments in which infection occurred 
there was a vigorous growth of the mildew, fully as good a 
growth as was present upon the seedlings of blue grass which 
were under the same bell jar. In the remaining five experi¬ 
ments in which infection occurred, there w^ere only a few small 
infected areas, while the seedlings of blue grass in the same 
experiments had numerous small infected areas producing 
conidia very abundantly. 
The seed was not pure as some of the grass was allowed to 
grow until it flowered and it w T as found that P. pratensis was 
also present. It is possible that some of the seedlings infected 
were those of P. pratensis ; still I am sure that most of the seed¬ 
lings that were infected were seedlings of wood meadow^ grass. 
Some of the infected seedlings of the wood meadow grass 
were kept with a view of determining w T hether the mildew would 
pass from them to other grasses, especially blue grass. The 
mildew, however, never developed on the wood meadow grass 
with sufficient vigor to make it possible to get sufficient spores for 
such experiments. 
