State Museum of Natural History. 45 



had assumed their autumnal tints, but in some instances the green 

 color had been retained about the margin of the spots. 



Septoria PileaB, Thum. Spots small, scarcely one line in diameter, 

 scattered, angular or suborbicular, definite, whitish, perithecia few, 

 one to four, epiphyllous, minute, brown or blackish-brown ; spores fili- 

 form, colorless, .0009 in. to 0015 .in. long, about .00008 in. thick. Living 

 leaves of the stingless nettle, Pilea pumila. Sandlake. Sept. The spots 

 are numerous but very small and the perithecia are scarcely visible to 

 the naked eye. On the lower surface the spots are sometimes tinged 

 with red or reddish-brown. 



Septogloeum Apocyni, n. sp. (Plate 1, figs. 1-2.) Spots few, large, 

 irregular, brown or blackish-brown ; nuclei few ; spores large, subcy- 

 lindrical, rounded at the ends, colorless, .0016 in. to .002 in. long, .0003 

 in. to .0004 in. broad, three to seven-septate, each cell nucleate. Living 

 leaves of Indian hemp, Apocynwn cannabinum. North Greenbush. 

 Sept. The spots at length become thick, brittle and almost black. The 

 surrounding tissue fades to a yellowish hue. The septa of the spores are 

 not always distinct but the nuclei in all the specimens examined are 

 plainly visible. 



Vermicularia circinans, Berk. Surface of onions. Albany. Jan. 



MorthieraThumenii, Cke. Living leaves of thornbush, Crataegus 

 coccinea. Sandlake. Sept. The specimens have the spores of this 

 species but the perithecia are few and scattered as in M. Mespili. 



Pestalozzia Stevensonii, Pk. (P. strobilicola, Speg.) Cone scales of 

 Norway spruce. Abies excelsa. Albany. September. 



Puccinia Thalictri, Chev. Living leaves of tali meadow rue, Thalic- 

 trum Cornuti, and early meadow rue, Thalictrum dioicum. Albany 

 and Center. The spores of this species are scarcely distinguishable 

 from those of P. Anemones to which species I formerly referred our 

 specimens. 



Puccinia Cirsii, Lasch. Living leaves of thistles, Cirsium lanceolatum. 

 Knowersville. October. 



Puccinia simplex, n. sp. Spots small, orbicular, scattered, brown 

 or grayish-brown, with a purplish margin ; sori hypophyllous, hemi- 

 spherical or depressed, compact, central, one on a spot, dark-brown ; 

 spores fragile, oblong-clavate, slightly constricted at the septum, pale- 

 brown, .0016 in. to .002 in. long, .0004 in. to .0005 in. broad; pedicel very 

 short. Living leaves apparently of some species of G-eum. Albany. 

 Sept. Though the spots are numerous, it is seldom that more than 

 one sorus occurs on a single spot. 



Protomyces polysporus, n. sp. Spots orbicular, thickened, generally 

 convex on the upper surface, concave on the lower, pale-green or yel- 

 lowish-green, becoming brown when old, two to four lines broad ; spores 

 numerous, crowded, globose or subglobose, subhyaline, or slightly 

 tinged with green, .0005 in. to .0006 in. in diameter. Living leaves of the 

 great ragweed, Ambrosia trifida. Albany. September. Leaves spot- 

 ted by this fungus may be found from June till the close of the season. 

 Usually the upper surface of the spot is convex and the lower concave, 

 but sometimes this order is reversed. Late in the season many of the 

 spots are found to have assumed a brown or blackish-brown color. 

 The spores are generally globose, but from their crowded mode of 



