‘376 OHIO EXPERIMENT STATION: BULLETIN 214 
ASH 
Trunk Rots. The ash as a forest and shade tree is a vigorous grower, but 
it is often marked by the attacks of timber decdys wheré these enter through 
wcunds or by means of the bases of dead branches. We have urgent need for 
more knowledge of these wound parasites. 
Leaf-Spots and Rust. I may also state that the foliage of the ash is attacked 
by rust (Puccinia fraxinata (Lk.) Arth.) but in the present state of our know- 
ledge we are unable to apply effective remedies. This rust, as in the case of 
other rusts, shows by the presence of its reddish or brown colored spore masses. 
Of leaf-spot fungi there are a number which call for careful study. 
ASPARAGUS 
Anthracnose. An anthracnose fungus of asparagus (Colletotrichum sp.) is 
. known in New Jersey but has not been frequent, if present, in Ohio. 
Rust. In the east and in Europe the rust of asparagus (Puccinia Asparagi 
DC.) proves to be destructive, and it has finally spread over Ohio. 
; The rust causes appearance of unusually 
early maturing of the plants. Closely examined 
the rusted plants show blister-like spots on 
skin of the stem, and underneath these ruptures 
there is brown color due tothe spores. The 
rust also assumes another form, the cluster-cup 
stage, which may be found in éarly spring with 
different color on volunteer plants; indeed the 
aecidial, or cluster-cup, uredo and _ teleuto- 
spore stages succeed each other on the stem. 
The usual recommendations are to burn the 
rusted bushes in autumn and to spray with 
Bordeaux mixture; this latter ‘‘reduces the 
amount of rust about one quarter.’’ (N. J., B. 
129). The Leopard spot of asparagus stems is 
apparently not infrequent, and the anthracnose 
of asparagus, which produces very small specks 
upon the stem, may also be expected, yet 
neither of these compares with the rust in 
Hes Gh Dacian Sain as destructiveness, nor does the rust of any other 
rust. The rust causeselongated devel. Plant appear to surpass this in its ravages. 
opment of the fungus, both upon the The Palmetto variety is reported less suscepti- 
stems and leaves of the plant. ble to rust than any other sort. 
AZALEA 
Leaf-Spots. This plant is grown as an ornamental plant and whether in 
hothouses or in protected planting out doors, is liable to injuries from leaf 
diseases. One of these is a leaf-spot fungus (Septoria azaleae). It is also 
liable to attack by a ‘‘bladders’’ fungus upon the young parts. 7 
BARBERRY 
Rust. Therust upon the barberry bush (4ecidium Berberidis Gmel.) is but 
a form or stage, the aecidial or cluster cups, of the wheat rust (Puccinia gram- 
ints P. rubigo-vera etc.). The increase of virulence in the rust of wheat and 
rye, when grown near barberry bushes, was long noted before the demonstrated 
