NEW WEST AMERICAN FUNGI. 201 
Spots amphigenous, dirty yellow, whitening out, sub- 
orbicular, 2 to 3 mm. diam., with a narrow rather darker 
raised border on both sides of the leaf. Perithecia epiphyl- 
lous, minute (70 to 75 w), collected in the center of the spot, 
semierumpent. Sporules cylindrical, mostly straight, faintly 
nucleate, 20 to 28 x 14 to 14 wu. 
The spots are concave on both sides of the leaf and 
generally dark brown at first. 
Rhabdospora Artemisiae, E. & E. 
On dead stems of Artemisia dracunculoides, Fort Collins, 
Colo., July, 1893, C. F. Baker, No. 132. 
Perithecia minute, black, prominent, gregarious on slightly 
blackened spots surrounding the stems or.interruptedly con- 
fluent along them. Sporules vermiform-cylindrical, hyaline, 
faintly 1 to 3-septate, undulate, 40 to 50x 3 w (at the thicker 
end). 
Differs from R. pleosporoides, Sacc. in its smaller peri- 
thecia and thicker sporules. 
Gloeosporium phyllachoroides, E. & E. 
On leaves of Artemisia vulgaris var. Californica, Pasa- 
dena, Calif., July, 1893, Prof. A. J. McClatchie, No. 371. 
Acervuli epiphyllous, in compact groups of 4 to 12 together, 
covered by the blackened epidermis which is raised into 
pustules about 1 mm. diam., resembling the stromata of 
some Phyllachora. Conidia oblong, curved, obtuse, granular, 
hyaline, continuous, 14 to 20x 3$to5y. Var. maculicolum 
has the acervuli on definite round, dirty brown spots about 
2mm. diam., but does not differ otherwise. 
Marsonia ribicola, E. & E. 
On leaves of Ribes auwrewm, Fort Collins, Colo., Sept. 
1892, C. F. Baker, No. 139. 
Spots amphigenous, at first greenish-cinereous, becoming 
light brown with a darker center and margin, 3 to 5 mm. 
diam. Acervuli collected around the center of the spots, 
epiphyllous, pale yellowish, becoming dark, 110 to 150 y 
