CHROMOGENIC FUNGI WHICH DISCOLOR woop. 87 
The mycelium penetrates pine and other similar woods 
through the medullary rays, dissolving the starch. In 
gum wood, Liguidambar Styraciflua Linn., it penetrates 
in addition many of the vessels of the wood. As compared 
with Ceratosomella the penetration is not so rapid, neither 
isthe stain so intense; but on the other hand it may. in 
time stain wood as deeply. 
Graphium eumorphum Sace. 
A species of Graphium has been found frequenting the 
old wood of Rubus strigosus and related species. This 
was isolated and grown first-on wood of several kinds which 
it was found to stain lightly, then upon agar media. An 
examination of the cultural characters of the fungus place 
it readily under Graphium eumorphum Sacc. The follow- 
ing description gives the principal characters, from both 
natural and artificial cultures :— . 
MYCELIUM. 
Cultures made from both the primary and the secondary 
conidia preduce a sparse, white mycelium, which soon 
turns a gray-green, and whose filaments measure from lp 
to 2u in diameter. These soon bear numerous conidia of 
the Sporotrichum-type (pl. 7, f. 2), and about a week 
later the stromata or stked heads of Graphium appear 
(pl. 7, £. 1). The heads are white, changing to a green 
or greenish yellow, and measure with the mucilage drop 
from 30p to 100u. The stalks vary from a yellow to a 
dark olive or a brown color, and measure from 3800p to 
500p in length, and from 10, to 40» in diameter. 
SECONDARY CONIDIA. 
The secondary conidia are obovate to elliptical in shape, 
and average 7.84 by 3.4m (pl. 7, f. 3). They are borne, ' 
