304 BOTANICAL GAZETTE. [ December, 
sitic Fungi of Wisconsin), by Bessey for Iowa (Bull. Iowa Ag. Coll.), by 
Rose for Indiana, except one (Bor. Gaz., ix), and forty-two of the sixty- 
one species given by Bessey for the whole United States (the Erysiphei), 
with two in addition. 
The feature which gives a value beyond that of a local list is the 
careful study of the limits of the species, and the consequent synunymy. 
The forty-two species of Bessey’s United States list, with two not in it, 
making forty-four, are reduced to twenty-eight, showing an actual con- 
densation of more than one-third, although two of the species were 
doubled instead of contracted. The principal changes are as follows: 
PRESENT NAMES. FORMER NAMES. 
‘Spherotheca Humuli (DC.) Burrill. . Castagnei in part. 
Erysiphe Galeopsidis DC. . |.  . E. lamprocarpa in part. 
E. lamprocarpa in part. 
. Montagnel. i 
. horridula. 
Erysiphe Cichoracearum DC, 
. heliciformis. 
. leuculenta. 
Uncinula Salicis (DC.) Winter . 
RE Bp gees 
: nzZel. 
Podospheera Oxyacanthee (DC.) DeBary { 5,’ bradagly 
inor. 
P. Myrtillina. 
mn, Ne, oe, 
pen 
—_ 
[. 
[. abbreviata. 
. Hedwigii. 
[. penicillata. 
Microspheera Quercina (Schw.) Burrill 
Microspbera Alni (DC.) Winter . [. Friesii. 
~ Rlgtanis <i 2 
. Van Bruntiana. 
- [. Viburni. 
Furthermore, Erysiphe communis is made to include E. Martii, and 
Uncinula Ampelopsidis to include U. Americana, U. spiralis and U.s 
fusca. It is now also pointed out that the gooseberry mildew belongs 
Spherotheca Mors-Uvee, and not to §. pannosa, while the clematis mildew 
is Erysiphe communis, and not E, tortilis; changes which appear to 
a SS 
bed bd ad bey et bd 
. 
sions given under Podosphera Oxyacanthe are essentially the same : 
published in this journal three years and a half ago by one of the authors; 
but the fae: is not mentioned 
_ Fewe of fungi were in greater need of revision than the suriace 
mildews, and the advancement made by Dr. Burrill and Mr. Earle in ~ 
paper will doubtless, in the main, meet with the approval of systematists- 
A change, the value of which might be questioned, is the placing of 5° 
many forms under M. Alni, including the exclusively American one On : 
lilac. Culture experiments are much needed to throw more light Up? 
points like this, : 
