PLATE 6 
A. —A young teosinte plant infected with Sclerospora philippinensis and supporting 
abundant conidiophore production from relatively inconspicuous markings on the 
leaves, not only of the main shoot but also of the two lateral suckers by which the total 
spore-producing area in considerably increased. 
B. —A closer view of the central shoot of A, showing the pallor of the conidiophore- 
bearing areas of the leaves and sheaths compared with the isolated stripes of normal 
green which still persist at a , a. As can be seen, the pallid portions occupy relatively 
a large proportion of the total leaf area, and since they support conidiophore produc¬ 
tion on both surfaces the total amount of production each night is large. 
C. —An older teosinte plant growing as an escape in a field of Mexican June maize, 
from which it has become heavily infected with 5 . philippinensis. Although slender 
and spindling, the plant has a relatively large conidiophore-bearing surface and lib¬ 
erates great quantities of conidia each favorable night. Each division of the meter stick 
equals 5 cm. 
