336 Marshall Ward— On a lily-disease. 
club-like arms, 2, and at 5-3° they, as well as the terminal 
swelling, were apparently studded with minute colourless 
spikules, 3, which grew in length but did not increase in 
number. Fig. 34, 4, shows their condition at 5.45. Each of 
these spikules is a minute peg-like branch from the club, the 
protoplasm of both being continuous. At 6.5 p.m. (the same 
evening throughout) the little pegs or sterigmata were begin- 
ning to swell at their ends into minute, clear, bead-like bodies, 
5, which were well defined at 6. 15, No. 6 , as young conidia, 
the rapid completion of which is most extraordinary — 7 being 
drawn at 6.25, and 8 at 6.40 p.m. 
Up to this stage the conidiophore may be still colourless, 
but after some hours of ripening, the sepia-hue shown in 
Fig. 9 makes its appearance. As already stated, these 
conidia fall from the sterigmata and germinate at once ; they 
may even begin to germinate in some cases while still attached 
to the sterigmata. 
It has sometimes happened that a young conidiophore be- 
comes encrusted with minute crystalline particles (Fig. 36) 
which may be oxalate of lime : in my cultures, however, this 
has not occurred to any great extent except in those where 
raisin-extract was used. 
One more feature needs description before we leave the 
conidiophores. In cases where the food-material is abundant, 
the conidiophore forms, as a rule, several successive heads of 
conidia in the following way. When the first head of conidia has 
been completed, a lateral branch springs from beneath the next 
septum lower down, as shown at x in Fig. 33, and this branch 
elongates considerably, becomes septate, and in its turn forms 
a terminal head of spores (Fig. 37), and this process may be 
repeated several times 1 (Fig. 38) : in a strong culture, in fact, 
I have had each of the branches in such a case as that of Fig. 
38 bear eight successive tufts of spores, one new one being 
developed every 12-14 hours. 
1 The resemblance of these forms to Corda’s Gonatobotrys is obvious. The 
same process occurs in the conidiophores of Sclerotinia Fuckeliana. See De 
Bary, Biol, of Fungi, p. 48. 
