M. MITRA 225 
Conidia are fusiform or spindle-shaped, pointed, a little curved, light 
greenish brown, 4~7 septate and 75 to 125 by 18 to 24 in diameter (Plate II, 
figs. 6-17). The breadth varies in different localities ; for instance, spores 
from Almora specimens were up to 26°6u in breadth while those from Pusa 
were up to 24 only. (Almora 72 to 117°8 by 19 to 26°64, Malda (Bengal) 
35 to 130 by 17 to 24y. Spores from Burma and Dharwar specimens are like 
those from Almora.) 
There is some variation with regard to the shape of spores. Typicu: 
spores of H. turcicuwm Pass. are spindle-shaped and pointedl2, and these 
have been observed in specimens from various localities in India, such as 
Almora, Dharwar and Burma (Plate II, figs. 14-17), but in Pusa and Malda 
(Bengal) specimens, the spores are somewhat curved and narrow (Plate II, 
figs. 7-13). The spots on the surface of leaves are however alike in specimens 
collected from various localities. Though the spores in Pusa and Malda 
specimens are somewhat more curved yet in cultures the conidia are generally 
straight, spindle-shaped, and very few are curved. Conidia of the fungus from 
the glumes of male spikelets are a little longer and more curved than those of 
the leaf fungus and the fungus has been named H. curvulum Sace. In the 
Philippines? it is described by this name but here in cultures it resembles the 
strain from the leaf and, when inoculated on the leaves, produces the same 
kind of spots as the leaf strain. 
CULTURES. 
Spore germination. When a few fresh spores are placed in a hanging 
drop culture, germination takes place within few hours. Germ tubes generally 
protrude from the ends of the spore but they have also been noticed to come 
from any of the middle cells of the spore (Plate II, figs. land 3). In scme 
cases the internal partition cf the spore breaks down and a continuous tube is 
formed. Again, in a few cases, the septa disappear before the protrusion of 
the germ tube, while in other cases it was noticed that the septa near the ends 
only were disorganized (Plate II, fig. 4). Plate II, figs. 1 and 2-6 were drawn 
after 48 and 18 hours of sowing respectively. Detached conidiophores are also 
capable of germinating by giving out a tube from either end and have often 
been noticed tc infect the leaves. 
Pure cultures were obtained several times by the poured plate methcd or 
from a diseased portion of a leaf after washing it for a few minutes in a solution 
1Saccardo. Fungi ital, a fig. $24. 
2 Massee. ‘“* Diseases of Cultivated Plants and Trees,” 1910, p. 481. : 
2 Otto Reinking. ‘‘ Philippine Plant Diseases.” Phytopathology, vol. eo NG: 3, 
1919, p. 140. - i 
