aa 
130 Transactions British Mycological Soctety. 
alternating coloured and white zones, the colour varying from 
pink to buff. On some media 115G develops a dark red colour. 
It may be mentioned that Sporotrichum globuliferum differs 
both microscopically and macroscopically from all strains of 
S. carms. On all media the colonies were light yellow in colour 
and extremely woolly, and in liquid cultures this fungus de- 
veloped a yellow or orange pigment, which diffused into the 
medium. 
V. DISCUSSION. 
The forms isolated from meat, although falling into the above 
groups may yet be classified as one species, as under the micro- 
scope no differences can be seen which would justify separation 
into distinct species. 
As far as one can determine from the meagre diagnoses of 
other species of Sporotrichum given in Rabenhorst’s Krypto- 
gamen-Flora and in Saccardo’s Sylloge, the present species 
differs from all others previously described. The diagnoses of 
the species given in these books are often so inadequate that 
identification is impossible, and unless re-diagnosis is possible 
it would be better to discard them. Diagnosis of such species 
should be based, not only on the characters exhibited when 
growing on the original substratum, but also on cultural char- 
acters on standard media under controlled conditions. 
VI. COMPARISON WITH OTHER SPOROTRICHUMS spp. 
The diagnosis of the genus in Rabenhorst’s Kryptogamen- 
Flora is as follows: 
Hyphae: forming a “turf,” septate or not septate, creeping 
or decumbent, irregularly but never verticillately branched; 
branches usually branched again. 
Comdiophores: hardly differentiated, at most very like the 
_ordinary side branches. 
Conidia: lateral or terminal on the hyphae or on small 
branches, usually very numerous, may or may not have well- 
developed sterigmata, oval or spherical, hyaline or slightly 
coloured, very small. 
In a note on the genus, Lindau says that “only in a few cases 
are the conidiophores erect, thereby being distinguished from 
the side branches ; the spores are usually produced on the creeping 
mycelium, which soon disappears. Then the colony consists of 
masses of spores and remains of hyphae. The spores are pro- 
duced terminally but through growth of the hyphae soon become 
lateral; the spores are often situated on small protuberances of 
the hyphae.” 
This method of spore formation is much the same as that 
