431 
Borers (Saperda candida) were destructive to apple-trees in Grant 
County, West Virginia. 
Rose-bugs (Macrodactylus subspinosus) were destructive to grapes in 
Strafford County, New Hampshire, and Woodson County, Kansas. 
Currant-worms, of some undescribed species, injured the currants in 
Aroostook County, Maine. 
MICROSCOPIC INVESTIGATION. 
By THOMAS TAYLOR. 
RG@STELIA LACERATA, TULASNE; ASCIDIUM LACERATUM, GREV.— 
Greville, in his Scottish Flora, p. 209, vol. iv, describes this fungus as 
it was known in 1826. He says that it is found on the nerves and 
petioles of the leaves, on the fruit, and even on the young branches of 
the hawthorn (Crategus oxyacantha) in summer and autumn everywhere; 
and M. A. Cooke observes that it is found on the under surface of the 
leaves and on the petioles and fruit of the hawthorn, and is common 
from May to June in the United States. 
My attention was called last year to the prevalence of this fungus on 
the hawthorn plants on the grounds of the Department during the 
months of July and August. This year it has also appeared. I first 
observed its presence in the month of July, although it may have ap- 
peared in June preceding. At this time, September 20, the fungoid 
forms are decaying. Nearly every variety of the hawthorn is affected, 
especially C. punctata and C. tomentosa. 
The Washington evergreen hawthorn plant C. pyracantha, Pers., 
seems not to be attacked by any species of fungus of the order Aci- 
diacet. Judging from my observation I deem it an error to suppose 
that Restelia lacerata attacks either the branches or fruit of any variety 
of the hawthorn. We have many varieties of the hawthorn growing 
on the grounds of the Department, but in no case have I found Restelia 
lacerata on their fruit or branches. ‘This species is confined to the leaves 
in every instance, and the petioles thus far are exempt from its attacks. 
On making my first observations and dissections of the orange-colored 
fungus, seen so frequently on the branches and fruit of hawthorn-bushes, 
I was much disappointed on finding that the color, structure, &c., of the 
peridium and spores did not agree with that given by mycologists; but 
on making search to ascertain if any other similar genus or species of the 
order Acidiacet existed on the hawthorn C. oxyacantha, or on any of the 
numerous varieties of this hedge-plant, with the view of accounting for 
the discrepancy, I found, on turning up the leaves having orange spots 
on their upper surface, ‘true peridia (sacks) of Restelia lacerata, Tul.: 
Heidium oxyacantha, Pers. Under a power of about 90 diameters the 
general character of the peridia is seen. They are densely aggregated, 
elongated, submersed, pale-brown, irregularly torn. The sporidia are 
copious; thus far agreeing with Greville’s description. -The circular 
spots on the leaves, Nos. 1 and 2, indicate the general points of 
growth of this fungus. I find it frequently on the leaf-ribs and terminal 
points of the leaves, and very often dispersed over the smooth parts of 
the leaf; sometimes, although rarely, the peridia are on the upper 
surface of the leaves. 3 represents the peculiar formation of their 
structure, which resembles net-work. At the juncture of the leaf (see 
