PAPERS ON BOTANY 229 
EXPLANATION OF PLATE IV. 
Fig. 1. Mycelium showing method of branching. 
Fig. 2. Spore masses showing irregularity in size and shape (low 
power.) 
Fig. 3. Spores. 
Tig. 4, 5. Germinating spores. 
Figs. 6, 7. Conidiophores with developing conidia. 
Figs. 8, 9. Conidiophores. 
Figs. 10, 11, 12, 13. Spore masses held together by the gelatinous 
substance. 
Fig. 14. Conidiophores with spores before agglutination. 
Fig. 15. Diagrammatic representation of growth of mycelium as de- 
scribed by Matruchot. 
the same manner. [rom just above a septa at the same time 
another branch or series of branches is formed which grows 
down to the medium parallel to the main axis but having posi- 
tive geotropism (Fig. 15). This structure has not been ob- 
served in my material. In all sections studied the main hyphal 
thread came directly from the medium and produced the conid- 
icphore unsupported by aerial branches. 
TABLE 
COMPARISON OF G. VIRIDE WITH THE SPECIES UNDER 
DISCUSSION 
Gliocladium viride Gliocladium sp. 
SporE MEASUREMENT  3-6x2-3 5.4-9x2.7-3.6 
Spore SHAPE Oval and pointed Elliptical to ovate, some- 
times pointed. 
SporE CATENULATION Catenulate at first Never catenulate in large 
number observed. 
DEVELOPMENT OF My- Brush-like structure of Brush-like mycelium 
CELIUM mycelium grows both grows only up. 
up and down. 
But a still more noticeable difference is in the color of the 
masses of the conidia. G. viride Matr, is described as green. 
In most cases the specimens in my cultures are black when ma- 
ture, though some variation was observed in the young col- 
onies. 
REFERENCES 
Matruchot, L., Bul. Soc. Myc. pp. 246, 1893. 
Corda, A. J. C., Ic. Fung. IV., pp. 30. 
Saccardo, P. A., Syll. 11, pp. 394. 
w Np 
