28 Thirty-third Annual Report of the 



A species of Vermicularia often occurs on the spots formed by the 

 Protomyces. 



Melampsora Hartigii, Thum. Living leaves of willows, Salix cordata 

 and S. nigra. Albany and Helderberg mountains. July to Oct. 



iEcidium cimicifugatum Schw. Living leaves of black snakeroot, 

 Cimicifuga racemosa. Buffalo. Clinton. July. 



Rcestelia Ellisii Ph. Living leaves of shad bush, Amelanchier 

 Canadensis. Riverhead. Sept. 



Cronartium asclepiadeum Fr. Living leaves of sweet fern, Comptonia 

 asplenifolia. Long Island. Sept. 



Stilbum pruinosipes, n. sp. Stem slender, equal or slightly tapering 

 upward, scarcely one line high, blackish, pruinose ; head small, sub- 

 globose, chestnut colored or blackish ; spores very minute, elliptical. 

 Dead stems of raspberry, Bubus strigosus. Center. Oct. 



Stilbum erythrocephalum Biltm. Cow-dung. Buffalo. Clinton. 



Periconia parasitica, n. sp. Stem slender, smooth, equal, subpellucid, 

 white ; head subgloboso or lenticular, white ; spores obovate elliptical 

 or oblong, .0003 in. to .0005 in. long, about .0002 in. broad. Dead 

 branches of water beech, Carpinus Americana, and parasitic on 

 Cheirospora botryospora. Charlton. July. 



This resembles Stilbum cundiclum, but the spores are not diffluent 

 and the heads are more depressed and whiter. 



Tubercularia Celastri Schw. Dead stems of bitter sweet, Celastrus 

 scandens. Charlton. July. 



Helminthosporium Pruni B. & C. Dead branches of choke cherry, 

 Prunus Virginiana. Center. June. The spores in this species are very 

 variable both in length and in the number of septa. 



Macrosporium Meliloti, n. sp . Spots irregular, terminal or marginal, 

 blackish-brown; flocci short, colored, septate, generally flexuous; spores 

 subelliptical, or clavate, generally tapering below into a short pedicel, 

 three to five-septate with a few longitudinal septa, colored, .001 in. to 

 .002 in. long. Living leaves of melilot. Newburgh. July. 



Alternaria Chartarum Preuss. Damp paper. Albany. Nov. 



Helicosporium cinereum, n. sp. (Plate 2, figs. 4-6.) Patches effused, 

 thin, cinereous ; flocci slender, sparingly branched, septate, blackish- 

 brown, the articulations longer than broad; spores nearly colorless, 

 grayish or cinereous in the mass, coiled in three or four volutions, 

 diameter of the coil .0008 in. to .001 in. Decaying wood. North 

 Greenbush. June. The species is easily distinguished from H. olivacenm 

 by its cinereous color and from H. obscurum by the more numerous 

 volutions of the spores. 



Polyactis Streptothrix, C. & E. Living or languishing leaves of 

 cohosh, Caulophyllum thalictroides. Jamesville. Aug. The spores 

 in our specimens, as well as in authentic specimens received from Mr. 

 Ellis, are .011 to .012 mm. in diameter, not .018 mm. as required by the 

 description. 



Pyricularia grisea, Sacc (Trichothecium griseum, Che). Living leaves 

 of crab grass, Panicum sanguinale. Sandlake. Aug. I do not find 

 any published description of this fungus, but specimens have been dis- 

 tributed under the latter name by Mr. Ellis. 



Peronospora obducens, Schrcet. Cotyledon ous leaves of touch-me- 

 not. Sandlake. Mav. 



