1917] HOTSON—BULBIFEROUS FUNGI 269 
is true with many other fungi, the abundance of the mycelium 
depends largely upon the kind of substratum. On potato or goat 
dung agar it develops very sparingly, often becoming quite difficult 
to detect even with a good lens, while on bran or cornmeal agar | 
it becomes more conspicuous, growing evenly over the whole sur- 
face of the culture and on the sides of the tubes, but never becoming 
very flocculent. On appropriate media such as horse dung, bran, 
or cornmeal agar, the mycelium forms a thick felted layer over 
the substratum. Most of the hyphae are small, about 3-5 u in 
diameter, but some of the older ones become as large as 10 », with 
prominent cross walls. They 
are frequently packed with large 
oil globules (fig. 1). Here and 
there in the hyphae swollen 
cells appear that are full of food 
material. These are oval at 
first, but eventually become 
almost spherical. 
DEVELOPMENT OF BULBIL.— 
A short lateral branch divides 
dichotomously, producing 
dichotomies of the second, third, © 
or sometimes of the fourth order 
(figs. 2-6). These branches 
divide into short cells which 
enlarge, eventually forming the central ones of the bulbil. As 
these cells grow they become more compact, and from them by a 
Process of budding others are formed which increase in size, 
oming closely and compactly pressed against their neighbors 
Fic. adeno preneaey ine, 
(figs. 7-0). This mode of development usually produces mature 
bulbils that phates Kah gus anieiiie magne ae URI So 
70-100 mw in diameter (fig. 13). o — 
_A second mode of develop ent of the bulbil is arenes os 
