FRE ee PLC MAR Cp ae NT aT Migs EE ad Se BRIG R GA NR ch PY 
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. ; 7 
100 MISSOURI BOTANICAL GARDEN. 
cladosporioides (Fres.) Sacc. and Cladosporium herbarum 
Link are identical. In someof our cultures forms inter- 
mediate between the two, and identical with the latter, were 
present (pl. 10, f. 1), but in no case were septate conidia 
noted, such as are given in the description of C. herbarum, 
the septation being confined to the hyphae which bear the 
conidia. If, however, the modified hyphal branches be 
mistaken for conidia, it is easy to assume them to be the 
septate conidia of Cladosporium. Time was not had to 
apply all the culture methods and media of Planchon to 
our species. Enough of the forms described by him in his 
study of these two fungi have been found in our cultures 
to verify his work; but the question still remains as to 
whether he is correct in assuming the fungus to bea Olad- 
osporium. This hinges upon whether the conidia-like 
branches bearing the conidia may themselves function as 
conidia; but even this might not settle the question, since 
it is a well-known fact that in most of our imperfect fungi 
any portion of the young mycelium when broken up may 
be able to reproduce the fungus. This being the case, we 
will for the present use the name Hormodendron here to 
designate our plant. 
Hormodendron griseum n. sp. 
The other species of Hormodendron studied was found 
growing on the wood of Liguidambar Styraciflua L., Pinus 
echinata Mill., and Fraxinus Americana L. The colonies 
of this species on both wood and agar media were of greater 
height, and of a different color when mature, as compared 
with those of H. cladosporioides. The mycelium is often 
hyaline, or nearly so in many portions, giving the colony 
a gray appearance, even though the conidial clusters are of 
a dark olive color. These two species of Hormodendron 
were grown carefully for nearly a year in parallel sets of 
cultures, with no reversion of the one type to the other, 
