154 
NORTH AMERICAN FUNGI. 
No. 1G3, Sclerotium on Asclepias. 
No. ]26 (Ger.), apparently a minute Septoria, on dead leaves, 
but without any fruit. 
From Portland, Maine, the following are insect productions : — 
Fuller, Nos. 97, 103. 
No. 108 (Fuller) is an incipient barren Sep)toria. 
ERISIPHE GRAMINIS. DC. 
On April 5th Dr. H. W. Harkness read a paper before the San 
Francisco Microscopical Society, on the subject of a species of 
Erisiphe, which appeared on wheat in California ; though allied to 
Erisiphe graminis^ DC., he thought it would prove to be a distinct 
species. Dr. Harkness kindly forwarded a specimen to us for com- 
parison, and having done so, we arrive at the conclusion that it is in 
no way distinct from the European species. It must, however, be 
added that the spores were immature, and hence the examination 
was not wholly complete. 
There is one point of interest in Dr. Harkness’ communication to 
which we desire attention. It is the announcement that he has 
found the pycnidia, which apparently were unknown to Tulasne, and 
which Fuckel afterwards sought for in vain. He says — 
“ Growing out of the mycelium projections are seen, from which 
conidia are produced. These appear as upright moniliform threads, 
bearing three or more oval spores. These, when placed in water, 
throw off germinal tubes. On boiling a portion of the fungus in 
a solution of caustic potash, the mycelium is destroyed, and a 
clearer view of the reproductive bodies may be obtained. 
“At the present stage of development, but one form of Pycnidia 
is observable, which is nearly globular in shape, and of a dark- 
brown colour. From this abundant ovate stylospores are ejected. 
No other forms ol pycnidia, such as Tulasne figures, are at present 
discernable. Large numbers of other bodies are seen, which 
prove to be conceptacles,” &c. 
Although we were not successful in finding pycnidia upon the 
specimen we received, there is no reason to [doubt the observations 
of Dr. Harkness. If confirmed it is an additional fact in the 
history of this common fungus. 
NEW BRITISH LICHENS. 
The following most recent additions to the Lichen-Flora of Great 
Britain, &c., are described in Papers by Rev. W. A. Leighton, 
read before the Linnean Society : — 
1. Calicium Kylemoriense, Larbal. Connemara. [Larhalestier') . 
2. Periusaria incarnata, Leight. Connemara. (^Larbalestier). 
3. Lecidea impressula, Leight. Pembrokeshire. {Leighton), 
