50 Thirty-fourth Annual Report of the 



term to designate those species that have simple septate stems, and the 

 latter those that have the stems made np of several compacted or 

 coalescing filaments. This application of these terms is exactly 

 reversed by some of the continental mycologists. We have thought 

 best to follow the English mycologists in our use of these generic 

 names. 



Periconia sphserophila, n. sp. (Sporocybeof some authors.) (Plate 2, 

 figs. 17-20.) Stem slender, cylindrical, about .03 in. high, black, 

 growing like a rostrate ostiolum from Sphceriaceous perithecia ; spores 

 few, loose, scarcely forming a head, subglobose or broadly elliptical, 

 colored, .0003 in. to .00035 in. long. On perithecia of Splmria mor- 

 bosa. Adirondack mountains. July. This fungus usually occupies 

 patches of perithecia. In the places where it occurs nearly every 

 perithecium supports a fungus, but other parts of the same excresence 

 will be wholly free from it. It is not often that the fungus occupies 

 all the excrescence. Growing, as it does, from the apex of the perithe- 

 cium, it, with its matrix, simulates the appearance of a Ceratostoma- 

 ceous Sphseria, the Periconia answering to the rostrate ostiolum. The 

 stems are scarcely half a line high and are composed of densely com- 

 pacted filaments. They are often coated by a pellucid membrane. It 

 is not a rare fungus in elevated localities in the Adirondack moun- 

 tains, where Sphceria morbosa is plentiful on the wild red cherry, Pru- 

 mis Pennsylvanica. So intimate is its connection, with the Sphseria 

 that it is difficult to believe that it is a distinct fungus rather than a 

 second form of development of the Spbaeria. But the spores are 

 clearly produced at the apex of the pseudo ostiolum just as in Peri- 

 conia and it has therefore seemed to me a distinct fungus, but one of 

 very singular character. I find no fruit of the Sphgeria in any of the 

 attacked perithecia. It may be that this Periconia is one of nature's 

 antidotes to the too rapid multiplication of this noxious Sphgeria, but 

 before this can be positively affirmed the specimens should be examined 

 in winter or spring when the Sphaeria matures its spores. 



Graphium gracile, n. sp. (Plate 1, figs. 1.1-13.) Spots large, ir- 

 regular, reddish-brown ; stems hypophyllous, slender, attenuated up- 

 wards, black or blackish-brown, pale at the tips where the component 

 filaments diverge and are colorless, subnodulose or rarely slightly 

 branched ; spores oblong, colorless, .0005 in. to .001 in. long, .0002 in. 

 to .00025 in. broad. Living leaves of red raspberry, Rubus strigosus. 

 Catskill mountains. Aug. The slender subulate stems of the fungus 

 are so scattered that they are easily overlooked. They are, however, 

 more easily seen because of the whitish torn en turn of the leaf through 

 which they grow. The spores fall off easily. They sometimes con- 

 tain a small nucleus near each end. 



Macrosporium concinnum, Berk. Dead twigs of striped maple, Acer 

 Pennsylvanicum. Catskill mountains. Aug. 



Helminthosporium Tilias, Fr. Dead branches of bass wood, Tilia 

 Americana. Helderberg mountains. Nov. This was associated with 

 Ex osporium Tilim, from which it is distinguished by its narrower 

 spores with more numerous septa and by the absence of the hard 

 stroma which belongs to the Exosporium. The tufts in our specimens 

 are almost wholly made up of spores. 



