Davis—Notes on Parasitic Fungi in Wisconsin — VIII. 415 
spotted, but the spots are those caused by Septoria polygonorum 
Desm., and the Mucedine, which is apparently superficial, and 
perhaps saprophytic, is confined to these spots. I have collected 
this several times on Septoria spots on Polygonum cilinode. 
Polygonum aviculare and P. cilinode, should therefore be stricken 
from the list of hosts of Ramularia rufomaculans Pk. On Poly¬ 
gonum amphibium and P. Muhlenbergii the conidial fasciculi 
appear on the lower surfaces of the leaves before the leaf tissues 
die and become brown, that is, before leaf spotting is appar¬ 
ent. In the leaves of Fagopyrum esculentum the tissue death 
proceeds more slowly and the appearance of the leaves would not 
lead one to suspect the presence of the fungus until a late stage of 
the attack. The same is true of Polygonum scandens which is also 
a host in Wisconsin. It was apparently the absence of spotting 
that led Peck to give the name Ramularia anomala to the form on 
this host. The thin, firm leaves of these hosts seem to succumb 
more slowly to the attack of the parasite than do the thicker leaves 
of Persicaria. In July 1920 a collection was made at Caryville on 
Polygonum Convolvulus that seems referable to Ramularia ano * 
mala Pk. The hypophyllous tufts are effused over indefinite areas 
or over the entire leaf surface; conidiophores densely fasciculate, 
hyaline, straight, 6-15 x 1-2/z; conidia hyaline, catenulate, more or 
less acute, straight, continuous, 4-20 x lj4-2y 2 fi- Some of the 
shorter conidia are ellipsoid and of the Ovularia type. 
In August 1920 there was collected in small quantity at Chase- 
burg a Eamularia on Polygonum Persicaria in which the areas 
bearing the tufts are not at first discolored but become pale brown 
the discoloration showing more plainly after the leaf is dried. The 
conidia are but 1-1 n thick. It is quite likely that the forms on 
Persicaria, Tiniaria, and Fagopyrum will prove to be distinct in 
their host relations. Dr. F. E. Jones failed to infect Fagopyrum 
using conidia from Polygonum scandens. The conidiophores and 
conidia are sometimes more slender (1%—2/*) than the descriptions 
indicate. Ramidaria occidentalis Ell. & Evht. on Eumex is a 
closely related species. I have seen this only on the single species 
of host, Rumex britannica, on which it is sometimes abundant. 
I offer the following characterization of the growth on Polygo¬ 
num cilinode: 
Ramularia cilinodes n. sp. 
Hypophyllous on Septoria spots; conidiophores arising from 
more or less intricate superficial mycelial ganglia, erect or as- 
