190 The Botanical Gazette. [May, 
meters but often the promycelium reaches a length of from 
484 to 50 before sporidia are produced. The promycelia 
grow obliquely up toward the surface of the water on the 
slide and some of the sporidia project above the surface into 
the air. On looking down upon a slide covered with germin- 
ating spores, these projecting sporidia form perfect thickets. 
The chains of sporidia readily fall to pieces and continue to 
bud until the whole slide is covered with yeast-like cells. 
Germinations were obtained from sowings made in Febru- 
ary, May and October. 
Yale University, New Haven, Conn. 
EXPLANATION OF PLatTe XVIII. 
re. 1. Doassansia intermedia sp. nov. Portion of a median section through 
as X 7oo.—Figs. 2, Bos and 4. PAs ato See bullatum Schroeter. Pro- 
wheat and sporidia. X 1000,—Fi igs. 5, 6 and 7. Ustilago spharogena Bur- 
rill. plans and avin The dotted line in fig. 6 represents the sur 
face of the X 1000,—Fig. 8. Entyloma i ao 6 Farlow. Promy- 
celium with sporidia producing germ-tubes. X I 
