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with that Puccinia. I should, perhaps, retain some doubts 
upon the legitimacy of this relationship, if it had not been my 
fortune to meet on another species of the same kind [Puccinia 
anemones , P.) spermogones perfectly characterized, and in 
which the colour, habit, and position would not allow me to 
hesitate an instant in attributing them to the Puccinia.” In 
this species of rust the whole under surface of the leaf is 
covered with a purplish-brown dusty coating of the spores, 
from the numerous pustules which are produced (Plate XII. 
fig. 15). The plants, when attacked, have a paler and more 
sickly appearance ; the leaves have a tendency to fold back- 
wards at their margins, and thenceforth their growth seems 
to be determined. Sowerby, in his “ British Fungi,” says : — 
“ Two or three sorts of flies are occasionally found dead on 
this plant at the time of the fungus being upon it, which is 
after wet weather in the summer, or early in autumn ; being 
apparently tempted by its flavour, they over-eat themselves, 
or else are destroyed by some poison.” This rust has spores 
resembling, in general characters, those of the yellow-spored 
series (Plate XII. fig. 17). 
I have not thought it necessary to give figures of any other 
species, partly on account of the uncertainty existing in many 
minds whether they ought to be regarded as species, and 
whether they will long claim a place in the British Flora; 
and partly on account of the similarity which exists between 
them, at least so far as they are of interest to the microscopist 
only. There remain, however, two or three other species, to 
which I desire briefly to allude. 
During the autumn of last year, whilst on a botanical 
excursion through a portion of Epping Forest, the “ great 
bog” became a centre of some interest. Bogs are generally 
attractive spots to those who are in search of microscopic 
organisms. On this occasion the chief object of interest were 
the small brown pustules with which the upper surface of a 
large number of the leaves of the pennywort ( Hydrocotyle 
vulgaris) was sprinkled. These pustules were brown, orbicular, 
regular, and in habit seemed to resemble rather those of most 
of the Puccinice than of a Trichobasis. The large, vigorous, 
and healthy leaves were not affected. Microscopical exami- 
nation, at first incomplete, led me to the conclusion that it 
was a species of JJredo , which had been met with in France 
[TJredo hydrocotyles , Mont.) ; but a re-examination, to which I 
was prompted by Mr. Currey, led me to the conclusion that 
it belonged rather to the present genus ; but I do not think 
that it can be associated with any species already described, 
notwithstanding its apparent affinity with the brown rust 
