50 ERYTHEA. 



Diplodina Pruni. On fire-killed Primus demissa, April 17, 

 1896 (No. 2120). 



Peritbecia subcuticular, scattered or subseriate, globose, smooth, 

 black, about ^ mm. in diam., raising the epidermis into pustules, 

 which are soon ruptured. Sporules elliptical or ovate, yellowish- 

 hyaline, obtuse, 1 -septate, and constricted, 10-14x4-6//.. 



Stagonospora Populi. On decorticated limbs of Populus moni- 

 Ufera, May 6, 1896 (No. 2131). 



Peritbecia scattered, erumpent, globose, 200-350/^. in diam., 

 smooth, black, with a small papilliform ostiolum. Sporules abundant, 

 hyaline, cylindrical, straight or curved, obtuse 3-4-guttulate, 20- 

 30x5-6/i. 



Macrosporium negundinicolum. On living leaves of Ne- 

 gundo aeeroides, Sept. 17, 1896 (No. 2270). 



Hypophyllous. On subiudefiuite dirty white spots thickly scat- 

 tered over the leaf Nearly pure white and very noticeable when 

 viewed from above. Hyphse erect, simple, sparingly septate 35-45 

 x5/j, smoky hyaline to brown, occasionally csespitose but mostly 

 solitary, not abundant. Conidia cJavate, stipitate, 3-7 septate, now 

 and then with one or two of the cells divided by a longitudinal 

 septum, light-brown, 25-50x1 0-1 2/a. 



ilonilia fungicola. On the peridium of a large fresh specimen 

 of Lycoperdon giganteum, completely covering the whole plant. 

 Sept. 21, 1896 (No. 2295). 



Forms a thick, ashen-gray, felt-like coating composed of inter- 

 woven hyaline hyphse, sending up fertile, simple branches bearing 

 chains of 4 or more subelliptical hyaline conidia 20-30x15-23//. 



Botrytis papyrigena. On old pasteboard in cellar, May 11, 

 1896 (No. 2135). 



Pulvinate-tufted or sphseriseform, black, tufts varying in size from 

 punctiform to 1 mm. in diam. Hyphse irregularly branched, 

 slender, bearing the minute (3/^) subglobose conidia clustered at 

 their extremities. 



Differs from B. fuliginosa C. & E. in its pulvinate-tufted mode of 

 growth and in its shorter hyphse. 



Torula occulta. On the inside of an old decaying elm post 

 below the surface of the ground, May 11, 1896 (No. 2132). 



