108 
Journal of Mycology 
[Vol. 11 
another the cells varied from 15-60 mmm., were very irregular 
in shape and were typical of the variety. In some perithecia 
taken from a single leaf of Brunella vulgaris the cells averaged 
30 mmm.; in others 15 mmm. 
14. Sphaerotheca pannosa Lev?— Mildew of the cul¬ 
tivated rose is common. The ascocarpic stage has not been col¬ 
lected on this host. The mildew is probably S. pannosa. 
15. Uncinula necator Schweinitz.— On cultivated grapes 
in all grape growing districts. 
16. Uncinula parvula Cooke & Peck.—Collected on Cel- 
tis occidentalis in the Snake River Valley. Not very abundant. 
17. Uncinula salicis DC.— On Populus trichocarpa, 
Salix cordata, and S. scouleriana. Widely distributed but not 
abundant. 
TWO NEW HAPLOSPORELLAS. 
BY J. B. ELLIS AND E. BARTHOLOMEW. 
Haplosporella diatrypoides E. & B.— Stroma subcarinose, 
orbicular, black, 1-1J mm. in diameter, sunk in the inner bark, 
circumscribed by a black line which does not penetrate to the 
wood; at first covered by the epidermis which soon ruptures and 
disappears exposing a cinereous-white disc pierced by the puncti- 
form ostiola. Perithecia minute, 4-10 in a stroma. Sporules ob¬ 
long or oblong elliptical, light brown, 10-14 x 5-6 /x. 
When the epidermis falls away the exposed stroma resembles 
that of Diatrype albopruinosa (Schw.). 
On dead limbs of Ulmus pubescens . Natoma, Kan. Jan. 8, 
1904. (No. 3132). 
Haplosporella cercidis E. & B.— Stroma minute, f-i mm. 
in diameter, seated on the surface of the inner bark, semi-erum- 
pent and surrounded by the stellately cleft epidermis. The ex¬ 
posed part of the stroma white — more distinctly so than in H. 
diatrypoides E. & B.— and as in that species, pierced by the 
black punctiform ostiola. Perithecia 2-6 in a stroma, minute. 
Sporules oblong or elliptical, 12-15 x 5 _ 6 
This is closely allied to H. diatrypoides E. & B. but it differs 
in its rather larger sporules, smaller stroma and in the absence 
of any circumscribing line. 
On dead limbs of Cercis canadensis. Natoma, Kans. Jan. 
8, 1904. (No. 3133). 
