Fig. 74—Rose Blight, {^Pvccinia toscb—Gky.- 
ville) found only on Rose leaves. Tlie seed- 
vessel with from four to seven cells, pointed, and 
a foot-stalk thickest at the base. 
Fig. 73 .—Rei) Rust of Corn, (Fuccinia graminis ,— Persoon) found on all the grasses, 
hut never on other plants or trees. The seed vessel with two cells, the upiJer the shortest, 
on a thread-shaped foot-stalk. Ycllowish-black or brown. 
u A piece of Wheat-straw, wMth the Fungus growing upon it. 
b The same, magnified. 
c A small portion of Straw, magnified. 
d A transverse section of a portion of the sheath of the Straw, highly 
magnified. 
e An upright section of the Straw, highly magnified. 
f A transverse section of the Straw, highly migtiified. 
<7 The Fungus, highly magnified. __ 
O. J EW ITT itl- et sc. 
