270 BOTANICAL GAZETTE . [OCTOBER 
thin-walled, pale blue-green by transmitted light, 2X3 u in diam- 
eter, varying to globose.—Fig. 9. 
This description does not fit P. candidum perfectly. The spores of the 
form here described are oval and pale blue-green, while those of P. candidum 
are described as globular and white. However, these do vary to globular, 
although not typically. Again, the changing of the mycelium from white 
to gray-green and avellaneous is unlike P. candidum. However, this character 
varied on different media. On no. 3, the gray-green showed more decidedly 
thanontor2. The white followed 
by avellaneous was more decided 
on no. 2. The color characters 
and also the spores seem to cor- 
respond more closely to the P. 
camemberti described by THOM. 
Differences in the other charac- 
ters, however, would not at all 
favor this name. On the whole it 
has seemed best to call it P. 
candidum. 
PENICILLIUM HUMICOLUM 
Oudem.—OvupeEmans and 
KoninG 29, pl. 26.—This 
fungus showed marked differ- 
nee ences when grown on different 
> 30, : media. On media 1 and 2, 
vee the mycelium was cream to 
; skeet  Sicrraratl —— Link: a, yellowish green, forming - 
fructifications with oe aad Stems peat, nS supe 
j, conidia, X 380, > crust which becomes dark 
: green (atro-virens) over POr- 
tions where spores form; mat of limited extent, usually orbicular; 
no zonation, but with a narrow cream colored border; reverse color 
yellow (melleus); no coloration of the medium. When grown on 
medium 3, the mycelium formed no yellowish, wrinkled crust, but 
Produced an orbicular, dark green mat, somewhat raised in the 
center and having a narrow white border; reverse color yellowish. 
ed phae richly and irregularly branched, very irregular in form, 
showing constrictions and enlargements giving a gnarled appeat 
ance, many septa, short cells, contents foamy and vacuolated. 

