No. 104.] 47 



Rhabdospora pleosporoides, Sacc. 



Dead stems of Scotch thistle, Onopordon acanthium. Albany* 

 May. Clinton. 



Rhabdospora Xanthii, n. sp. 



Perithecia numerous, small, .011 to .Ol-l in. broad, depressed, cov- 

 ered by the thin browned or blackened epidermis which is pierced by 

 the ostiola; spores filiform, curved, colorless, .0008 to .0012 in. long, 

 .00006 broad. 



Dead stems of cocklebur, Xtmthium strumarium. Albany and 

 North Greenbush. Apr. 



The tissues surrounding the perithecia are often colored in such a 

 way as to impart a smoky-brown hue to the affected patches. 



Phlyctsena septorioides, Sacc. 

 Deskd 8tema of Tpoke weed, Phytolacca decandra. Albany. Nov. 



Phlyctsena complanata Sacc. 

 Dead stems of Polygonum. North Greenbush. May. 



Zythia ovata, n. sp. 



Perithecia ovate, reddish or flesh colored when fresh and moist, black 

 when dry, single or two to three in a cluster, nearly superficial, .025 

 to .030 in. long, .017 to .018 broad; spores oblong, colorless, .0003 in. 

 long, .00012 broad ; basidia densely and fasciculately branched. 



Dead bark of poplar. South Ballston. Sept. 



Diplodina EUisii, Sacc. 



Dead stems of goose foot, Chenopodium album. North Greenbush* 

 Apr. 



This was originally Diplodia hyalospora, C. & E. The perithecia 

 are .008 to .01 broad. The spores are at first simple, then uniseptate. 

 They are .0007 to. 001 long, .00035 to .0004 broad. 



Thyrsidium Micheneri, Sacc. 



Dead branches of water beech, Carpinus Americana. West Troy. 

 May, 



This is Cheirospora Micheneri, B. & C. 



Marsonia Martini, S. S E. 

 Living leaves of Quercus prinoides. Karner. Sept. 



Coryneuni compaetum, B. S Br. 

 Dead branches of red birch, Betula nigra. Saugerties. May. 



Pestalozzia Saccardoi, Speg. 



Dead leaves of oak, Quercus alba. Day. July. The spots on the 

 leaves are less black and the colored cells of the spores are more nu- 

 merous in this species than in P, monochcete, which also inhabits oak 

 leaves. 



