Sept. 1904 ] A New Phyhllachora from Mexico . 
231 
a long filiform extremity, 100-130x10 fx; sporidia oblong-fusoid, 
straight or curved, 5-7-septate, each cell having a nucleus in 
young sporidia, narrowed at the ends, very slightly constricted 
at the septa, brown, 27-30 x 6-7/x; paraphyses filiform, nucleo- 
late. 
O11 decorticated area of branch of Cephalanthus occidentalis, 
Ridgeway, N. Y., Aug., 1904. 
The sporidia are for the most part arranged as follows: 
at the top of the ascus one sporidium, then follow four sporidia 
irregularly biseriate, and lastly three uniseriate sporidia. Comes 
near to Lophiostoma macrostomoides DeN. 
* 
Helotium vitellinum Rehm, var. pallido-striatum 
Fairman n. var.— Cups about 1 mm. wide, pale straw color out¬ 
side, the external surface of the disc marked in older specimens 
with one or two fine circumferential concolorous striae (hardly 
large enough to make the appearance zonate) : stipe pale straw 
color, 2-3 mm. high, dark at the base, at the disc sometimes 
ribbed, disc orange red, not dentate: asci clavate cylindrical, 80 
x io^a; sporidia hyaline, oblong cuneiform (rounded at one end, 
pointed at the other) 17-20 x 3/x; paraphyses fiiliform. 
On fallen petioles in the woods, Ridgeway, N. Y., August, 
1904. 
Externally paler than the description of Rehm’s species 
which is called vitelline, but the disc is the same in color and 
the asci and sporidia agree exactly, therefore I call it a variety. 
8 
A NEW PHYLLACHORA FROM MEXICO. 
J. B. ELLIS AND W. A. KELLERMAN. 
During the summer plants of Adolphia infesta attacked 
by a fungus were sent for our examination by Mr. A. L. Her¬ 
rera, City of Mexico. It was at once evident that the parasite 
was not a Rust by which designation it seems to have been 
known in that country. It proved to be a species of Phyllachora, 
apparently not hitherto recognized and a technical description 
(with illustrations) is given below. 
Adolphia infesta is a Mexican member of the family Rham- 
naceae, the one other species of the geuns occurring in Cali¬ 
fornia. It is a striking shrub with opposite spinose branches 
of olive green color, and leaves small or none. 
The stromata of the fungus are scattered or evenly distrib¬ 
uted over the stem, here and there more densely clustered, 
pustuliform or often irregular in shape and elongated, usually 
less than half a millimeter in diameter, sometimes reaching one 
