State Museum of Natural History. 47 



greenish-yellow margin. When very confluent the leaf at a little dis- 

 tance presents the general dingy red hue of the spots. 



Ramularia sambucina, n. sp. Spots small, orbicular, scattered, pallid 

 or reddish-brown, surrounded by a blackish- brown border ; flocci hy- 

 pophyllous, tufted, short, irregular above, colorless ; spores oblong or 

 subcylindrical, slightly narrowed at the extremities, colorless, .0009 in. 

 to .0013 in. long, .0002 in. to .00025 in. broad, sometimes concatenate, 

 rarely uniseptate. Living leaves of elder, Sambucus Canadensis. 

 Oatskill mountains. Aug. 



Ramularia Impatientis, n. sp. Spots few, suborbicular, reddish- 

 brown, the margin subindeterminate ; spores epiphyllous, oblong, sub- 

 acute, colorless, .0006 in. to .0009 in. long. Living leaves of touch- 

 me-not, Imp aliens fulva. Catskill mountains. Aug. This is a very 

 obscure fungus, scarcely visible to the naked eye. The flocci and 

 spores are generally more abundant near the margin of the spot, but 

 this is not always well defined. 



Ramularia Rudbeckii, n. sp. Spots variable in size, frequently con- 

 fluent, angular, included by the veinlets, brown ; flocci hypophyllous, 

 tufted, short ; spores subcylindrical, rounded at the ends, colorless, 

 .0012 in. to .002 in. long, sometimes concatenate and obscurely septate. 

 Living leaves of the cut-leaved cone-flower, Rudbeckia laciniata. 

 Catskill mountains. Aug. The flocci are even shorter than the spores. 



Cercosporella reticulata, n. sp. (Plate 2, figs. 14-16.) Spots large, 

 irregular, brown ; flocci amphigenous, short, tufted, nearly colorless ; 

 spores numerous, very variable in length, bacillary or subcylindrical, 

 colorless, .0016 in. to .0045 in. long, .00025 in. to .0003 in. broad, with 

 three to seven septa. Living leaves of the tall goldenrod, Solidago 

 altissima. Catskill mountains. Aug. The large spots sometimes 

 occupy nearly half of the leaf. They are dry and brittle. The pure 

 white color of the fungus contrasts beautifully with the dark brown 

 color of the spots. The spores are usually more abundant along the 

 veinlets than elsewhere, and they thus give a reticulate appearance to 

 the spot. I have referred the species to the genus Cercosporella, be- 

 tween which and Cercospora there appears to be scarcely any differ- 

 ence, except that of color. 



Cercospora depazeoides, Sacc. Living leaves of elder, Sambucus 

 Canadensis. Sandlake. Sept 



Cercospora circumscissa, Sacc. Living leaves of choke cherry, 

 Prunus Virginiana. Catskill mountains. Aug. 



Cercospora beticola, Sacc. Living leaves of beets, Beta vulgaris. 

 Albany. Sept. 



Cercospora Violae, Sacc. Living leaves of violets. Catskill moun- 



tains. Aug. 



Cercospora venturioides, n. sp. Spots generally large, irregular, 

 sometimes confluent, dark-brown or cinereous with a broad blackish- 

 brown margin; flocci epiphyllous, tufted, short, subflexuous, generally 

 one or two-septate, united at the base, colored ; spores cylindrical or 

 bacillary, at length three to five-septate, colorless, .0015 in. to .005 

 in. long. Living leaves of siikweed, Asclepias Comuti. Albany. 

 Sept. The spots have a very dark or smoky-brown color which often 

 becomes centrally cinereous on the upper surface. Sometimes there 



