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252 ANNALS оғ THE Missourt BOTANICAL GARDEN 
tures were made of this fungus and it was found to be a new 
(7) species which they called Rhizomucor parasiticus. Lucet 
and Costantin in their description of this particular fungus, 
assert that it varies from Rhizopus nigricans only in having 
branched sporangiophores. This character alone is not suf- 
ficient to establish a new genus, since branched conidiophores 
occur in many species of Mucor. The writer has observed 
branched conidiophores in cultures of Rhizopus nigricans. 
Lucet and Costantin evidently obtained this latter fungus as 
a contamination of their culture medium, since they examined 
only the sputum of the diseased person. 
M. pusillus Lindt, Archiv f. exp. Path. 21:269-298, 1886. 
This species of Mucor was isolated simultaneously with 
M. corymbifer (M. ramosus Lindt) by Lindt (’86). The 
spores produced injurious effects when injected into rabbits. 
The same species was reported by Jakowski (’89) in a case 
of otomycosis, but this determination is considered doubtful. 
M. racemosus Fres. Beitr. z. Myk. 12. 1850. 
This species is very frequent on decaying organic sub- 
stances, such as vegetable debris, meat, and insect cadavers. 
The fungus found by Bollinger, in 1880, in fifteen instances of 
mycoses in birds, and determined as M. conoides or M. 
racemosus, is probably identical with Aspergillus fumigatus. 
According to Berthelat (’03), it is without action on rabbits 
and guinea-pigs. 
M. ramosus Lindt, Archiv f. exp. Path. 21:275-284, 1886. 
Mucor ramosus Lindt is very closely related to M. corym- 
bifer, and differs (?) from it only slightly in the size and 
shape of the spores. According to Lindt ('86), it is toxic for 
rabbits. 
M. septatus Bezold, in Siebenmann, Schimmelmykosen d. 
Ohres 97. 1889. 
Rhizomucor septatus Lucet et Cost. Rev. Gén. Bot. 12: 
81-98. 1900. 
Mucor septatus was discovered by Siebenmann (’89) in 
the external auditory canal, evidently as a saprophyte. The 
description given for this species is incomplete, and no cul- 
