PAPERS ON BOTANY 249 
SOME NEW PORTO RICAN FUNGI 
L. E. Mives, UNriversity oF ILLINOIS 
The material studied was collected by Dr. F. L. Stevens in 
the years 1912 and 1913, and the specimens are deposited as 
described by Miss Esther Young (1). Expressions of appre- 
ciation are due to Dr, N. L. Britton and Mr. Percy Wilson, of 
the New York Botanical Garden, and also to Mrs. Agnes 
Chase of the Bureau of Plant Industry, for assistance by de- 
termining host-plants. 
I.—MYCOSPHAERELLA TABEBUIAE Sp. Nov. 
Spots amphigenous, becoming white and transparent, small, 
1-5 millimeters in diameter, surrounded by a dark, brown- 
purple blotch which gradually shades off into the normal leaf 
tissue. Perithecia numerous, epiphyllous, black, quite evident 
on the light background of the center of the spot, 80-130 
microns in diameter, ostiolate. No paraphyses. Asci cylin- 
drical, sometimes slightly ovate, double-walled, straight or 
somewhat curved, 50-60x10 microns. Spores narrowly cla- 
vate, hyaline, straight or slightly curved, 1l-septate in the 
middle, scarcely if at all constricted, lower cell narrower and 
somewhat pointed, 17-20x3.5 microns. 
On living leaves of Tabebuia haemantha (Bertero.) DC. in 
Porto Rico: Vega Baja, 2021 (type) ; Mona Island, 6187. 
This species differs from Mycosphaerella capreolata on Big- 
nonia capreolata in its narrower spores, and from M. erysi- 
phoides on Tecoma radicans and M. passiflorae on Bignonia 
in its much larger spores. 
IIL.—MYCOSPHAERELLA DIDYMOPANACIS Sp. nov. 
Spots amphigenous, mostly circular, sometimes confluent, 
but the individual spots remaining distinct, very light-brown 
or gray in color, one or two centimeters in diameter, surround- 
ed by a narrow orange-brown line, on the lower side thickly 
studded to within a millimeter of the edge of the spot by the 
small black perithecia. Perithecia amphigenous, much more 
abundant on the lower side of the leaf, erumpent, numerous, 
small, dark, 70-130 microns. Ostiole 12-20 microns in diam- 
eter. No paraphyses. Asci short-stalked, oblong, slightly 
