278 BOTANICAL GAZETTE [NOVEMBER 
CULTURE CHARACTERS.—On cornmeal agar the fungus grows 
rather rapidly, o.5-1.0 cm. daily at room temperature. The thal- 
lus is: very regular and is distinctly zonated after reaching a 
diameter of 4 or 5cm. There is a dense growth of white aerial 
mycelium on the older portions of the thallus. On Brazil nut 
agar the characters are as previously stated, except that the 
growth is a little more rapid, and a halo 3 mm. wide, due to the 
digestion of the solid proteids, surrounds the thallus. On nut 
plugs the fungus grows luxuriantly and destroys the nut meat 
without giving off any appreciable odor. A large amount of fluffy 
mycelium is the characteristic feature of its growth on nut plugs 
as it is on the nut in the shell. On autoclaved rice the growth is 
vigorous and a pink tinge appears in the medium after two days. 
After ten days four colors are distinguished; where the rice is in 
contact with the glass in the older portions, Ochraceous Buff, in the 
younger, Venetian Pink; interstices between the grains are filled 
with mycelium through which a Jasper Pink color shows, in the 
older portions; in the younger portions it is Light Hortense Violet. 
The nut strip above the water is soon covered with the dense 
mycelium, and is appreciably shrunken within five days. The 
strip in the water remains intact, but the water is soon filled with 
the mycelium which makes its way upward from the strip at the 
bottom. In hanging drop the spores germinate with a single 
germ tube, which in the most vigorous, at room temperature, may 
attain the length of the spore in two hours after planting. Spore 
production in hanging drop at room temperature proceeds at the 
rate of about one spore per hour per conidiophore. The conidio- 
phore lengthens and increases in diameter as the conidia are cut 
off at the end. The process is very like spore production of Tricho- 
thecium as described by Linpav (14). 
TaxonoMy.—The fungus evidently belongs to Cephalosporium, 
but none of the species of this genus as reported by SACCARDO 
(25) has characters sufficiently like the Brazil nut parasite to permit 
it to be classified as one of them. C. fructigenum McAlp. (15) has 
spores of almost identical shape, size, and appearance, but it has 
knobbed conidiophores and oblong spore masses which are not pres- 
ent in this species, which therefore is described as new. 
