67 



Puccinia linearis, Peck. 



Ampliigenous ; sori very narrow, deep seated, oblong or linear, parallel, 

 crowded, long covered by the epidermis, black ; spores oblong, slightly taper- 

 ing toward the base, not constricted, very obtuse or truncate, .0018'-0024' long, 

 .0006' broad ; pedicel colored, very short. 



Leaves and sheaths of grasses. Watkins. September. 



This is related to Puccinia coronata, but it is without tie apical 

 teeth of the spore. 



Puccinia angustata, Peck. 



Hypogenous ; spots pallid or none ; sori oblong or linear, sometimes regu- 

 larly arranged at equal intervals in long parallel lines, narrow, black ; spores 

 narrow, oblong-clavate or elongated, septate above the middle, strongly con- 

 stricted, having the lower cell more narrow than the upper, and cylindrical 

 or slightly tapering downwards, .00018 '-.0024' long, .0006' broad ; pedicel 

 colored, thick, very short. 



Leaves of Scirpus sylvaticum and 8. Eriophorum. West Albany 

 and Watkins. September. 



Protomyces Erythronii, Peck. 



Spots stained with red or purple ; spores growing in the tissues of the 

 leaf, scattered or crowded, most often arranged in short series and erumpent 

 through narrow chinks in the epidermis, large, globose, at length black, 

 .002 '-.0026' in diameter. 



Leaves and petioles of Erythronium Americanum. Greenbush. 

 May. 



The leaf is most frequently affected at the base of the lamina or 

 blade. 



Ustilago Erythronii, Clinton. 



Produced on the leaves in oblong or irregular vesicular patches, half an 

 inch or more in length ; spores globose, rough, rather large, .0006 '-.00075' in 

 diameter, black in the mass. 



Leaves of Erythronium Americanum. Goat Island, Clinton. 



Uredo Ledicola, Peck. 



Spots small, definite, rarely confluent, suborbicular, reddish-brown, some- 

 times with a darker border ; sori subrotund or irregular, surrounded by the 

 ruptured epidermis ; spores subglobose, rough, .0012' in diameter, orange, 

 with a thick hyaline epispore. 



Upper surface of leaves of Ledum latifolium. Mt. Marcy. July. 



Apparently quite distinct from U. Ledi A. & S. 



