474 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Burrillia decipiens (Wint.) Clint. 
Doassansia decipiens Wint., Journ. Myc., 1: 102. 1885. 
Burrillia decipiens Clint., Journ. Myc., 8 : 154. 1902. 
Sori in leaves, forming yellowish circular areas, thin, witlTspore 
balls showing as minute elevations ; spore balls situated chiefly in 
the palisade layer, densely clustered, consisting of a firmly adhering 
mass of spores without a definite cortex though partially covered 
with remains of dark brown thick walled sterile threads, chiefly sub- 
spherical, 75-140 n in diameter; spores pale, polyhedral or often 
more irregular, with moderately thick smooth walls, 8-12 p, in 
diameter. 
Host: Limnanthemum lacunosum, N. J. (type). 
This species has been reported but once, having been collected 
originally by Mr. E. A. Rau in New Jersey. The sterile hyphae 
are not in the nature of true cortical cells, as in cross section they 
show as rather indistinct threads, apparently only partially surround¬ 
ing the spore balls. From the character of these threads the spe¬ 
cies approaches somewhat Doassansia Epilobii which has very 
small cortical cells. The germination of the spores evidently takes 
place in situ , though the exact character of this has not been de¬ 
scribed. Literature: 29,160,161. 
Burrillia Echinodori Clint. 
Doassansia Alismatis of Hark, in Proc. Calif. Acad. Sci., ii, 2 : 231. 1889. 
Burrillia Echinodori Clint., Journ. Myc., 8: 154. 1902. 
Soii in leaves, forming irregular to subcircular areas, showing 
spore balls as closely clustered very minute elevations on both sur¬ 
faces; usually a single spore ball occupying entire section of leaf 
between layers of the epidermis, more or less merged sidewise, often 
irregular but chiefly oblong to subspherical, without distinct cortex 
but composed of sterile cells and spores intermixed; sterile cells 
light reddish brown with thinner walls than the spores and more 
ii i egulai in shape and size; spores light colored, chiefly ovoid to 
spherical, occasionally somewhat flattened, aj^parently thick walled, 
12-18 fx in length. 
Host: Echinodorus rostratus , Calif., Fla. (type). 
This species was first reported, apparently, from California by Hark- 
