Report of the State Botanist. 101 



Cercospora Comari, n. sp. 



Plate 1, figs. 1-3. 



Spots irregular, indefinite, sometimes confluent, reddish-brown ; flocci 

 minutely tufted, amphigenous, slender, flexuous, colored, .005 to .0065 

 in. long, .0002 broad ; spores clavate, obscurely two to three septate, 

 slightly colored, .002 to .003 in. long, .0003 broad in the widest part. 



Living leaves of Potentilla palustris (Comarum palustre). Karner. 

 July. 



Cercospora Majanthemi, Fckl. 



Living leaves of two-leaved Solomon's Seal, Majanthemum Mfolium. 

 Caroga. July. 



Our specimens vary a little from the description of the species to 

 which we have referred them, but they are probably only an American 

 variety of the species. The spots are margined with red or brownish- 

 red and the spores are nucleate, but I have not seen them septate. They 

 appear to rise from a minute reddish or pink-colored tubercle. 



Hadrotrichum linear e, n. sp. 



Plate 1, figs. 4-6. 



Flocci amphigenous, densely caespitose, subflexuous, black, forming 

 oblong or linear black sori ; spores terminal, ovate, oblong-ovate or 

 oblong-pyriform, colored, .00065 to .0011 in. long, .00045 to .00055 

 broad, sometimes becoming constricted in the middle. 



Living and dead leaves of Calamagrostis Canadensis. Adirondack 

 mountains. June. 



I have referred this fungus provisionally to the genus Hadrotrichum, 

 although it does not rigidly agree with the description of that genus, in 

 which the flocci are characterized as short. In our plant they are .002 

 to .003 in. long. By their tufted mode of growth they appear to deviate 

 from the allied genus Monotospora. The spores, so far as observed, do 

 not become definitely uniseptate, though in a few instances the endo- 

 chrome seemed to be divided and the spores constricted in the middle 

 as if about to multiply by division. They are colored, but are slightly 

 paler than the flocci. These form definite linear or oblong sori or 

 patches which are often parallel and sometimes repeatedly interrupted 

 and look like a series of dots. At first sight they might be mistaken 

 for some species of Puccinia. 



Cenangium balsameum, n. sp. 



Receptacle single or caespitose, sessile, erumpent, externally black or 

 blackish, greenish-yellow within, disk plane or convex, blackish bay-red 

 or greenish-yellow when moist, black and somewhat uneven when dry ; 

 asci clavate, .004 to .0055 in. long, .0005 to .0006 broad; spores oblong 

 or subfusiform, sometimes slightly curved, simple, greenish-yellow, .0008 

 to .0012 in. long, about .0003 broad. 



Dead branches of balsam, Abies balsamea. Caroga. July. 



This has probably been confused with C. ferruginosum, which it 

 somewhat resembles, but the spores are much larger than the dimensions 

 ascribed to the pores of that species, and larger than the spores in the 

 specimens of that species in Mycotheca Universalis. 



