146 The Botanical Gazette. [May, 
collecting in the growing extremity. Apparent septa are 
sometimes observed (fig. 4 a and fig. 6 a), but the deception 
results from a coherence of granular contents in a cross sec- 
tion of the tube; and by moving towards the point of growth, 
this protoplasm soon mingles with the mass at the normal lo- 
cation (fig. 7 @). Variations of the above may be found in 
the empty spaces sometimes noticeable (fig. 13, a, etc.), and 
these are most abundant after a considerable growth has taken 
place. Small vacuoles are not infrequent. 
manifest. A sporidium measures about 9 p in diameter, but 
its form is not generally spherical. In most cases the ab- 
scised reproductive body shows a prolongation at the end by 
which it was attached (fig. 5 a@ and 4), the constriction which 
eventually sets the body free encroaching somewhat on the 
usual limits of the sterigma in the group of Uredinee. Vac- 
uoles are frequently present, but these vary in number and 
in size. 
Sporidia are not always produced, and their absence 
counterbalanced by a longer growth of the tubes. hi 
greater growth probably results from the fact that the promy- 
celia are completely immersed in water. Lagerheim’, speak- 
ing of the germination in water of Puccinia heterogena Lager 
heim, says, “They then germinate exactly like uredospores 
a long non-septate germ tube, often bent backward and ne 
ward, and with a strongly undulating contour, grows out 0 
the germ pore. . . Probably the fungus can fepro” 
m no 
ble that 
for the 
long promycelial growths of the fungus we are consider 
1. the 
is 
S “ ve 
be again normally continued.’ With the per 
character, a geniculation is often noticeable, the new 8°" 
Journal of Mycology, vol. vu, no. 1. 
