134 ERYTHEA. 
almost simultaneously. These may continue to develop 
almost uninterruptedly with the ultimate formation of a long, 
flexuous, non-septate mycelium but more commonly they 
proceed but a short distance before breaking up into two or 
three branches. In a number of instances the germ-tubes 
give rise almost immediately to an enlarged cystose body 
into which is collected much of the protoplasmic contents of 
the spore in the form of orange granules. The subsequent 
development of these resting spores was not observed. 
The successful germination of the teleutospores is much 
more difficult to obtain. Thoroughly mature spores however 
will generally begin to show evidences of germination at the 
end of twelve hours and about six hours later will have 
produced a germ-tube of considerable length. As far as 
observed only one of the two germ-pores develops and when 
both cells of a spore germinate it is almost invariably pores 
on opposite sides of the spore from which the germ-tubes are 
emitted. Immediately after the protrusion of one of these 
germ-tubes orange colored bodies begin to collect at the 
distal end and from this arises a contorted promycelium which 
becomes septate at frequent intervals. As soon as this 
promycelium has attained a length equal to four or five times 
the length of the spore a number of its cellular divisions 
give rise to short thick branches, one from each division, on 
which are borne oval or pyriform promycelial-spores, the 
whole process differing in no essential feature from that 
which has been observed in such well known species as 
Puceinia graminis. The germination of these promycelial- 
spores was not observed. 
T have endeavored to illustrate these observed facts by the 
accompanying drawings all of which have been prepared 
from camera-lucida sketches using the same magnifying 
combination in all cases. 
In conclusion I would call attention to the peculiar position 
eceupied by this fungus as one of the possible connecting 
forms between the genera Puccinia and Phragmidium. In 
the Journal of Mycology, Vol. 6, pp. 112-118, Lagerheim 
