BULLETIN OF THE BUSSEY INSTITUTION. 941 
impossible to speak with assurance unless one has had a long expe- 
rience in the examination of rose stems, but it seemed as though the 
specimen examined belonged to Jtosa lucida, or some nearly related 
species. Phragmidium speciosum has not been collected near Boston, 
as far as we know; but it is not uncommon in the Middle States, and 
extends at least as far West as Iowa, where it was collected by Pro- 
fessor C. E. Bessey. 
The fungus on Amorpha, named by Berkeley and Curtis Puccinia 
Amorphe, is made by Schroeter * the type of a new genus, Uropyzxis, 
distinguished mainly by the presence of a gelatinous covering to the 
spore. The fungus is not uncommon wherever the species of Amorpha 
are found, but it does not occur in the vicinity of Boston. It is found 
from South Carolina (Ravenel) to Iowa (Professor Bessey), where it 
occurs on A. canescens, and, if we are not mistaken, on A. fruticosa, 
and to San Diego, Cal. (Cleveland), where it occurs on Amorpha Cali- 
fornica. We have received from Professor Bessey Amorpha leaves 
on which were both Uredo and Teleutospores. The Uredo spots are 
yellowish, and surrounded by a border of closely-packed, club-shaped 
paraphyses, as in the Uredo of Melampsora salicina. ‘The Uredo 
spores are oval, covered with slight projections, and about .02 mm. in 
diameter. As the Uredo first appears, the paraphyses are short; but, 
as the teleutospores succeed the Uredo spores in the spots, the para- 
physes grow much larger. ‘The gelatinous portion in the young spores 
is very large compared with the dark mass of the central portion, but, 
as they ripen, is reduced to a thin coat covered with slight projections, 
which ruptures, on the application of potash, a part remaining attached 
to the lower end in the form of a cup. It might be well to inquire 
whether Meidium Fraxini, Schw., is a stage of this fungus. It is 
common in the regions where Puccinia Amorphe is found. Experi- 
ments on this point cannot be carried on at Cambridge, where it is not 
possible to get fresh material for study. An interesting Puccinia was 
sent to us, in March, 1875, by Mr. D. Cleveland, of San Diego, Cal. 
It was growing in company with an icidium on Malvastrum marru- 
bioides. The Puccinia formed small round spots of a blackish-purple 
color, which were raised convexly above the surface of both sides of 
the leaf. The A&cidia on the under surface were in dense clusters, 
with orange-colored spores about .02 in diameter. The spermagonia 
* “ Hedwigia,” Vol. XIV. p. 165. 
VOL. II. 16 
