86 Wisconsin Academy of Sciences, Arts, and Letters. 



tortion of the hosts, even when the sori were numerous and ag- 

 gregated, the pressure being into the mesophyl which was some- 

 times torn from the epidermis in the area surrounding the gall. 

 The common factors which make for susceptibility in these 

 various hosts are not apparent to me. 



Septoria astericola Ell. & Evht. on Aster puniceus. In the 

 specimen on this host the spots become lead color with a dark 

 border. The largest spots are 1 cm. long. The pyenidia are 

 epiphyllous, about SO/* in diameter and the sporules 23-33 x 1/j.. 

 Collected at Lake Mills, Oct. 19, 1912. 



Gloeosporium saccliarinum, Ell. & Evht. Specimens on Acer 

 spicatum collected at Spooner have circular spots of a pale olive 

 color with a darker border; the largest sporules are 7x3//.. The 

 fungus often developes on subcircular spots of a tan color on 

 Acer Saccliarum. 



Cercospora caricina Ell. & Dearn. My notes of a specimen on 

 Cyperus filicidmis collected at Madison, Aug. 12, 1912, are as fol- 

 lows: Hyphae 3-8 in a tuft, brown, somewhat nodulose, often 

 denticulate at the apex, 50-80x3-4/* ; conidia hyaline, obclavate- 

 cylindrical, straight or curved, becoming pluris?ptate, 65-100x 

 3-4/x. On bracts and culms, spreading from above downward. 

 Cercospora caricina Ell. & Dearn. is described as having hyphae 

 15-25 x 3— 3Vi>At and conidia 34-73 x 3/x, but I have specimens on 

 Carex in which the hyphae and conidia equal those noted on 

 Cyperus. Cyperus Houghtonii which was tentatively given as a 

 host in the 4th suppl. list should not have been omitted from the 

 provisional list. 



Cercospora ceanotM Kell. & Swingle. On Ceanothus ameri- 

 canus. Madison. In one of the collections on this host the fungus 

 is particularly well developed, the conidiophores being 20^45x 

 4-5/7. and the attenuate conidia 80-150 x 4-6/x. A collection made 

 in the same locality two weeks later agrees with the description 

 of Cercospora fuliginosa, E. &. E. the conidia being darker, 

 cylindrical and 30-80 long. It is probable, therefore, that the 

 descriptions of C. ceanotM Kell. & Swingle and C. fuliginosa Ell. 

 & Evht. were drawn from different states of the same fungus. 

 The former is the prior name and the latter is antedated by C. 

 fuliginosa Ell. & Kell. on Diospyros (1887) for which reason C. 

 MacClatchieana Sacc. & Svd. was substituted. 



