46 THIRTY-FOURTH ANNUAL REPORT OF THE 
growth some of them appear to be pressed into a somewhat angular 
ovate or broadly elliptical shape. The host plant does not suffer ma- 
terially from the attacks of the fungus, the affected ones growing as 
large as the unaffected and their leaves retaining their ordinary green 
color except in the affected spots. Occasionally a Peronospora is found 
on the spots, an indication, perhaps, that the supposed Protomyces 
spores may be after all only the resting spores (oospores) of a Peronos- 
pora. 
Reestelia penicillata, Rabh. eaves and unripe fruit of the shad 
bush, Amelanchier Canadensis. Highlands. June. 
‘Keidium pedatatum, Schw. Living leaves of violet, Viola pedata. 
New Dorp, Staten Island. W. R. Gerard. 
Helicomyces mirabilis, x. sp. (Plate 2, figs. 6-10.) Forming dense 
tufts or irregular whitish patches one line or more in diameter ; flocci 
slender, branched, colorless, the fertile ones sometimes coiled and 
slightly thickened near the spore ; spores abundant, large, spirally or 
irregularly coiled in two or more yolutions, multiseptate, the cells 
about as broad as long, either filled with a granular endochrome or 
containing a single large nucleus ; coils .0016 in. to .0025 in. in diame- 
ter ; spores .0005 in. to .0006 in. broad. Old corn cobs lying in water. 
Ithaca. Prentiss. The tufts or masses occur mainly on the erect 
scales of the cob. In the dry state they are rather firm and compact. 
The septa of the spores are variable in number, ranging from six to 
sixteen or more. Unlike typical Helicomyces, this species has the 
threads long and well-developed. 
Septocylindrium Ranunculi, ». sp. Spots oblong or irregular, 
brown ; flocci hypophyllous, very short ; spores oblong or subcylindri- 
cal, usually narrowed in the middle, obtuse, colorless, simple or one to 
three-septate, .0008 in. to .0016 in. long. Living leaves of buttereups, 
Ranunculus acris. Sandlake. Sept. This species is ambiguous be- 
tween Cylindrium and Septocylindrium. Many of the spores are sim- 
ple, others are obscurely uniseptate and others still show three septa. 
Possibly the simple spores are immature, and on this supposition I 
have referred the species to Septocylindrium ; otherwise this fungus 
would obliterate the distinction between Cylindrium and Septocylin- 
drium. 
Ramularia Spiree, x. sp. Spots indefinite, scattered or confluent, 
brown or blackish-brown ; spores hypophyllous, concatenate, oblong 
or cylindrical, colorless, variable in length, .0003 in. to .001 in, long, 
.00012 in. to .00016 in. broad, generally with a minute nucleus near 
each end. Living leaves of nine-bark, Spire@a opulifolia. Albany. 
Sept. ‘The strings of spores are well-developed, and in some instances 
branched. 
Ramularia rufomaculans, 7. sp. Spots numerous, often confluent 
and occupying nearly the whole leaf, dull-red ; flocci very short, hy- 
pophyllous tufted; spores concatenate, variable, elliptical oblong or 
cylindrical, colorless, .0003 in. to .0006 in. long, .00012 in, to .00016 
broad. Living leaves of Polygonum amphibium vay. terrestre. Al- 
bany. Sept. The chains of spores are sometimes brauched. The 
species is closely related to R. Bistorte, from which it is separated be- 
cause of the different character of the spots and the different and varia- 
ble character of the spores. Sometimes the spots have a paler or 
