48 [Assembly 



Pestalozzia consocia, n. sp. 



Spots very large, sometimes occupying nearly half the leaf, irregular 

 or angular, reddish-brown above, paler beneath ; acervuli amphigen- 

 ous, minute, punctiform, black ; spores oblong-fusiform, .0012 to 

 .0014 in. long, .0003 broad,, five septate, with four colored cells, .0009 

 to. 0011 in. long and a single bristle at the apex. 



Living leaves of witch-hazel, Hamamelis Virginiana. Day. July. 



The species is associated with and occupies the same spots as 

 PhyUosticta Hamamelidis. It may be a question as to which species 

 causes the spots, though they are probably due to the Phyllosticta. 



Pestalozzia? campsosperma, n. sp. 



Acervuli hypophyllous, minutely tufted ; spores fusiform, curved, 

 triseptate, .0008 to. 0012 in. long, .00028 to .00032 in. broad, with two 

 colored cells .0005 in. long, the apical cell hyaline, conical, ending in 

 an acuminate point, the lower cell tapering into the short pedicel. 



Dead leaves of balsam fir, Abies halsamea. Adirondack mountains. 

 June. 



This is a singular species. I have seen no terminal cilia and am not 

 able to say whether they are entirely wanting or whether they are early 

 deciduous. Tiie characters otherwise are so exactly like those of Pes- 

 talozzia that I have, with some doubt, referred our plant to that genus. 

 The curved spores are very characteristic of the species. 



Uredo Ledi, A. i& S. 



Living leaves of Labrador tea. Ledum latifolmm. Bergen swamp, 

 Genesee county, and Sandlake, Eensselaer county. June. 



The authors of this species remark that the leaves attacked by the 

 fungus appear broader than .usual. This peculiarity was very percep- 

 tible in the Bergen swamp specimens, the usually involute margins of 

 the leaves being almost wholly expanded or unrolled. The spores, 

 which occur on the lower surface of the leaf and are partly concealed 

 by its tomentum, are .0008 to .0009 in. broad. Their smaller size, 

 different place of occurrence, and the different color of the spots readily 

 distinguish this species from Uredo ledicoJa. 



Puccinia hastata, Cke. 

 Living leaves of Viola primidtefolia. Eiverhead. Sept. The typical 

 form was discovered in Maine on leaves of Viola hastata. In our 

 specimens teleutospores and stylospores occur on the same leaf and 

 sometimes in the same sorus. 



Gymnosporangium clavariaeforme, D. C. 



Branches of Juniper, Jtiniperus communis. Elizabethtown. May. 



This was in some instances associated with Gymnosporangium cla- 



vipes, the two occurring near each other on the same branch. The 



species is a rare one in this country, and has hitherto been reported 



from Maine only. 



Periconia pycnospora, Fres. 

 Dead stems of melilot. Bethlehem. Apr. 



