1913] GODDARD—SOIL FUNGI 275 
of abundance of moisture to form a continuous, inky black, somewhat slimy 
surface. 
TRICHODERMA Koninct Oudem.—OupEMANS and KONING 
29, pl. 31.—Mycelium sparse, loose, spreading indefinitely, at 
first white and floccose, later bluish green and finally dark green 
(atro-virens) or olive green, 
spreading loosely and _ ir- 
regularly over the surface; 
reverse color olive green; 
no coloration of the 
medium. Hyphae richly 
branched, scattered, hya- 
line, septate, 2. ee ee 
broad, forming a loose web 
scarcely covering the me- - 
dium. Conidiophores 
branched, opposite or alter- 
nate, twice or three times 
forked, each branch ending 
in I~3 conidiiferous cells 
each of which bears a co- 
nidial head. Conidiiferous 
cells flask-shaped, 8-10 p 
long, 3-4u broad. Conidial 
heads globular, without 
slime, 6-10 » in diameter, 
easily breaking to pieces. 

Fic. 14.—Trichoderma nigro-virens, n. sp.: 
+ 7. a, habit photograph; 5b, conidiophores, X80; c, 
Conidia pale green, trans- conidiophores showing conidial heads, x 180; 
Parent, elliptical varying 4-f, conidiophores showing conidiiferous cells, 
conidiiferous cell, Xabout 750; g, 
la 
to globular, 2.5-3X3-4 u 380; 7, 2 
: * 5 idi 80; kh, germinating conidia. 
in diameter.—Fig. rs. conidia, X 380; h, g g 
Verticillium chlamydosporium, n. sp.—Mycelium  orbicular, 
spreading into a thick mat with little zonation, at first white, 
later cream, and finally ochroleucous to ochraceous forming a firm 
‘rust; surface powdery with age; reverse color yellow (flavus) to 
range; no coloration of the medium. Hyphae branched, septate, 
hyaline, 2~3.3 uw broad. Conidiophores upright, branched verticil- 
