686 Wisconsin Academy of Sciences, Arts, and Letters. 
Myrioconium comitatum n. sp. 
On dead areas that often include the entire leaf. From a 
thin, pale, discoid stroma arise erect, simple, hyaline, crowded 
basidia, 10-15 x l-iy 2 ^ on which are borne apical, globose* 
hyaline sporules 2-3 /a in diameter. These sporules exude m drop¬ 
let-like masses which dry on the surface of the leaf. The acer- 
vuli are usually nervisequent and variable in size sometimes ex¬ 
ceeding 1 mm. in length. On Populus tremuloides. Mountain, 
Long Lake, Wausaukee and Athelstane. On Salix discolor, Athel- 
stane. On Salix longifolia, Suring. On Populus the acervuli 
are hypophyllous, on Salix epiphyllous. On Populus tremu- 
loides this fungus was invariably associated with Sclerotium bi- 
frons Ell. & Evht. The midribs of the attacked leaves of Salix 
longifolia are black. I am separating the form on Salix as var. 
salicarium n. var. 
What I take to be a microconidial state of Marssomna 
castagnei (D. & M.) Sacc. occurs also on Populus tremuloides 
in scattered groups having sporules about 4 x 1/a. 
There were collected on leaves of Astragalus canadensis at St. 
Croix Falls August 27th, 1914, specimens that have been filed 
in the herbarium under the name Gloeosporium astragali ad 
interim. The following notes were made: Spots circular, 
alutaceous, often zonate, about y 2 cm. in diameter; acervuli 
epiphyllous, yellowish, 150/a in diameter; sporules ovoid to ob¬ 
long, hyaline, 4^-8 x 3/a. The sporules are much like those of 
Gloeosporium davisii Ell. & Evht. on fruit of Vida americana. 
It was not abundant. No Gloeosporium was collected on any 
other host in the vicinity. I think it best to consider this as 
merely a herbarium name for the present. 
Collet otrichum nigrum Ell. & Hals. On Capsicum (cult.) 
Milwaukee (R. E. Yaughan). 
COLLETOTRICHUM SIEPHII n. Sp. 
Spots definite, orbicular, light brown becoming cinereous, 
margin darker above, y 2 ~l cm. in diameter, sometimes confluent ; 
acervuli epiphyllous, scattered, little or not at all prominent, 
about 75/a wide; sporules hyaline, continuous, arcuate, acute at 
both ends, 22-27 x 2%-3 /a ; setae brown black, sometimes sub- 
flexuose, occasionally bent, sometimes 1-2 septate, 36-75 x 4^. 
On leaves of Silphium perfoliatum. Lynxville, Wisconsin, Sept. 
9, 1915. 
