Carxe — Broil')} Hot of Citi-'us. 
from a stromatic nauss inaumtli the epidermis. On culture media 
coiddia arc hurne terminally on sj)oro]>hores ^vhich branch from the 
aerial hy]>jiae. Tliere are usually enlargements at the junction of 
the spoi'opliores and hyphae. The sporophores are narrower than the 
hyphae }»roper liaving a width cd’ l-2mmm. The conidia are hyaline, 
cdlijdical or lemon shaped, the larger almost flattened on the sides 
Xbjdersized conidia are more rounded. Pear shaped forms occasion- 
ally oi'ciir. The paj>illa is bi'oad and flattened and up to ominm. long. 
Tfie most characteristic feature is a constant pedicel or tail con- 
sisting of ]>ortion of the sporophore. This pedicel is rarely less 
tiian erne half tin* length of the coiiidium and frequently exceeds it 
in lengtii. The persistent pedicel is so constant that the- occasional 
sp(tre fcMitid witliout one has l>een regarded as having lost it as a 
result of accident in handling. Siuch spores have not constituted 
l':'f of tile many thousand seen. The conidia are very deciduous. 
Tiie surface of a fruiting culture usually has many spores lying on 
it which have fallen away from their attachments. AVhen mycelium 
is niouuUnl, in water for microscoi»ic examination it is difficult to find 
spores still attached. 
Measurements of iOO conidia developed on lemon leaves on 
potato dextrose agar gave an, average of 34.6 x 16.1mmm., Avith a 
rango of 17-36 x 10-21. These measurements agree, so closelv Avitfl' the 
comparative few found in nature on leaves and fruit that the Avriter 
consiilcrs that conidia developed in this manner may be regarded 
as typical of tlie species. Tiie bulk of these fall Avithin 26-4.3 x 
14-19iumni. as shown' in Table 1. 
^o. 
Length mmm. 
Widtli mmm. 
Xo . 
' 1 
,) 
Over 30 
Over 20 
3 
8 
46 — ^30 — - 
20 
7 
18 
41—43 — 
19 
8 
23 
— 
17 — 18 
36 
lb 
31—33 — 
13 — 16 
24 
26—30 — 
14 
9 
< 
. 21—25 — 
13 
5 
4 
L’iuler 21 — 
Under 13 
8 
Table I. 
Measurements of 100 
conidia groAvii 
on lemon leaf 
fragments on 
potato dextrose agar. 
41 cuuidi 
a develo])ed on leaf and 
fi'ULt tissues ill 
Avater gave a 
mean of 34.6 
X 16.4 Avith a range of 2 
0 X 12 — 28mmin. Conidia 
grown on tragments of Colociusia ,sp. 
oil potato dextrose agar gaA'c 
a mean of 34.9 x 13,5. 52 conidia 
from a potato 
dextrose agar 
cnltuie gave 
amean of 30.3 x 14. i 
5 (range 18.3 
■41.8 X 9.6— 
19 , 2mmm.^ . 
It is eAudent from the figures given that 
■ the A'ariation 
