64 BULLETIN 1298, U. S. DEPARTMENT OF AGRICULTURE 
Two cultures similar to P. pinopliilum but both producing black 
sclerotia-like bodies. Conidial surface as in P. pinopliilum, or glass 
green to tea green. Agar red; pulp pink to red. Isolated from sul- 
phite pulp. Each observed once. 
One culture with mycelium white to cream-colored, cottony, soon 
covered with white ascigerous masses, conidial fructifications rather 
rare. Agar normal; pulp slightly browned. Isolated from ground 
wood. Observed once. 
Citromyces sp. — Macroscopically appears like Perricillium, but dis- 
tinguished by the somewhat inflated conidiophores bearing a single 
whorl of sterigmata. (See PI. XVI, fig. 5.) Mycelium scanty, white, 
or soggy, appressed; conidia deep bluish gray-green, or deep glaucous 
gray. Agar normal or yellowish; pulp made " dirty" by spores. 
Isolated from ground wood (10918-6, 10918-12). Common. 
Gliocladium sp. — Mycelium very scanty, loosely floccose; conidio- 
phores Penicilhum-like (PL XVI, fig. 15), except that they are 
widely scattered over the surface of the cultures so that no solid mass 
of them is found. Spores held in a deep American green mucus 
which is soluble in water and sometimes is produced in such amounts 
that the pulp becomes dyed with it. Isolated from ground wood 
(10918-1) and sulphite pulp. Very common in all kinds of pulp and 
river water. 
Verticillium sp. — Mycelium sparse, superficial, hyaline or very 
light brown, soon covered with cinnamon-drab conidia borne singly 
at tips of loose verticillately branched conidiophores (PL XVI, fig. 
10); conidia held together in heads. Pulp slightly browned. Iso- 
lated from ground wood. Common. 
Spicaria sp. — Mycelium appressed, soon covered with white to 
cinnamon-buff fructifications. The conidiophores are branched in 
loose verticils (PL XVI, fig. 19), thus differing from Penicilhum, 
which has close verticils. Underside of culture is brown, and in 
older cultures the agar becomes dark brown. Pulp browned. Iso- 
lated from ground wood (10918-5). Observed once. 
Unidentified Mucedinaceae. — Several other Mucedinaceae were 
isolated from pulp, but since they caused no perceptible damage and 
were not common, notes on them are omitted from this report. One 
species which caused a yellowing of the pulp is described as follows : 
Culture deep colonial buff to tawny, appressed to downy; hyphce 
hyaline to yellowish; some large, rigid, light yellow-brown filaments 
in clusters; many cylindrical oidia of various lengths. Agar and 
pulp, colonial buff to tawny. Isolated from sulphite pulp. Common. 
DEMATIACEAE 
Torula sp. — Hypha3 hyaline, soon becoming very dark brown, 
mostly submerged, breaking up into chains of one-celled, dark-brown 
spores. Pulp very dark neutral gray. (See PL XVI, fig. 11.) Iso- 
lated from sulphite pulp. Common on sulphite and ground-wood 
pulps. 
Thielaviopsis sp. — Culture dull black, appressed, with white pow- 
dery masses on surface; hyphas hyaline, then brown, breaking up into 
chains of one-celled, dark-brown chlamydospores ; many hyaline, 
oidia-like conidia produced endogenously. Agar normal; pulp gray. 
Isolated from ground wood. Observed once. 
