no 



JOURNAL OF MYCOLOGY. 



[Vol. 1 



binucleate, forming a palid globule on the upper surface of the spot. 

 On living leaves of Laportea Canadensis, New York (Peck.) 



4. Gloeosporium Aceris, Cke., 1. c. Rav. F. Am. 525. 

 Hypophyllous. Spots irregular, cinereo-f uliginous, indefinite, pierced 



here and there. Spores elliptical, obtuse, hyaline, straight or flexuous, 

 18 X 5 fJ'. 



On leaves of Acer rubrum. South Carolina (Ravenel.) 



5. Glceosporium nervisequum, Fckl. Symbolse Mycol., p. 369, sub 

 Fusario. 



Acervuli erumpent, compact, rather prominent, orbicular or sub- 

 elongated, soon becoming nearly black, mostly on the upper surface of 

 the leaf and either on or close along side of the main nerves which are 

 bordered by a narrow, dead, arid, brown strip, a large portion of the leaf, 

 especially the apices of the lobes becoming dead and brown. Spores 

 oblong-elliptical or subovate, hyaline, 8—12 x 5—6 !J-, on rather stout 

 basidia, mostly longer than the spores themselves. 



On leaves of Platanus racemosa. Sent from California by Dr. H. W . 

 Harkness. 



This agrees very well with Fuckel's description except that the acer- 

 vuli in the California specimens can hardly be described as ''tuberculis 

 liberis," nor are they for the most part on any "arid spot," but on the 

 nerves themselves. From the small or rather poor specimen in Myco- 

 theca Veneta 1290 it is difficult to form any definite opinion, and the 

 specimen 1595 of the same collection, on young branches of Platanus, is, 

 in our copy, a Cytispora, having minute (4—6 x i !->■) spores on long, slen- 

 der basidia. It is not therefore absolutely certain that the California 

 specimens are really the same as the Fusarium nervisequum, Fckl., but, 

 as we expect to distribute the specimens in X. A. F., some one having 

 access to Fuckel's Fungi Rhenani will be able to decide. 



6. Gl(EOsporiu3i Trifolii, Pk. 1. c. 



Spots suborbicular, often concentrically zoned, brown. Spores 

 oblong or cylindrical, obtuse, simple, hyaline, 15—23 x 4—6 fJ-. 

 On living leaves of TrifoUum pratense, Kew York, (Peck.) 



7. Gl(E0SP0rium Ribis (Lib.) Mont. & Desm., Grev. II, p. 83. 



Spots orbicular, small, often confluent, brown. Acervuli epiphyllous. 

 covered by the blackened cuticle, whitish within. Spores oblong, curved. 

 10 x 5—6 ,'J- (Sacc. in Syll.), subrostrate at the apex, hyaline. In a speci- 

 men of Leptothyrium Bibis, from Cooke, the spores are mostly 15 x 6—7 p-. 

 We have seen no American specimens, but in Grev. II, p. 83, Leptothy- 

 rium Bihis, Lib., which is a synonym of this, is credited to New England 

 and Prof. Peck reports it on Bibes prostratum, Adirondack Mts., N. Y. 



8. Glceosporium Fagi (Desm.) 



Spots suborbicular, dark brown above, olivaceous below. Acervuli 

 minute, prominent, nearly honey-colored. Spores oblong-ovoid, or sub- 

 rhomboid, 15—20 X 6—8 ,'J' minutely guttulate, on cylindrical, fasciculate 



