42 THIRTY-SECOND REPORT ON THE STATE MUSEUM. 
attacked. Usually a large brown spot is produced by the fungus in the center 
of the leaf, the margin of the leaf remaining green. The affected leaves soon 
shrivel and wither. In the case of the cherry leaves scarcely any green mar- 
gin was left, and so rapid was the spread of the fungus that nearly the entire 
leaf was discolored while it yet remained soft and flexible. A peculiar and 
decided odor is diffused either by the affected leaves or the fungus. This odor 
is perceptible in the dried specimens for a long time. The leaves of the shad- 
bush are attacked along the midvein and veins. Sometimes the unripe fruit 
is also attacked, the fungus causing it to rot quickly. Its destructive character 
has suggested the specific name. 
RAMULARIA EFFUSA 7. Sp. 
Hypophyllous, effused, whitish; spores very variable, globose, obovate, 
elliptical, oblong or cylindrical, .00016-.0011' long, about .0002 broad, 
occasionally uniseptate. 
Living leaves of black huckleberry, Gay/ussacia resinosa. Center. July. 
This species seems to be intermediate between Oidium and Ramularia. It 
occupies the whole lower surface of the leaves, and often affects all the leaves 
ona branch. The same or a similar species occurs on leaves of Cassandra 
calyculata. 
RAMULARIA VARIABILIS Fed. 
Living leaves of mullein, Verbascum Thapsus. Catskill Mountains. July. 
The spots are rather small in proportion to the size of the leaf, and when 
fertile are beautifully frosted on both sides by the fungus. 
RAMULARIA ALBOMACULATA 7%. Sp. 
Spots suborbicular, two to three lines in diameter, sometimes confluent, 
pale yellowish-green on the upper surface, whitened by the fungus on the 
lower surface, at length becoming purplish or brown; spores oblong or elliptical, 
generally binucleate, .0003’-.0004’ long, .00016’ broad. 
Living leaves of hickory, Carya alba. Albany and Greenbush. June and 
July. 
The spots are sometimes limited by the veinlets of the leaf and consequently 
angular, The fungus is thus far limited to the lower surface. In some 
instances there appeared to be creeping filaments indicating an intimate affinity 
with Oidium. 
RAMULARIA ANGUSTATA 7. Sp. 
Spots small, orbicular, sometimes confluent, pale greenish-yellow, frosted 
beneath by the fungus; flocci minute; spores narrowly fusiform or subcy- 
lindrical, .0003-.0004' long, about .0001’ broad, often containing two or 
three nucleoli. 
Living leaves of pinxter plant, Azalea nudiflora. Central Bridge and 
Carlisle, June. 
The specific name has reference to the very narrow spores. 
