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1904] SMITH—PUCCINIA ASPARAGI 35 
green healthy growth. Fig. 16 shows a branch from the edge of the 
dead spot with pure teleuto development on the green thrifty branches. 
This condition lasted so long as the wind continued, then gradually 
reverted to uredo infection, and the tops all became affected. This 
shows more strikingly than anything else the effect of real atmos- 
Fic. 13.—Asparagus at Sacramento, sheltered on west by trees; same effect as 
in figs. IT, 12, 13. 
pheric dryness upon Puccinia Asparagi at this stage of its develop- 
ment, and the function of the teleuto form. 
At Milpitas, where dew was quite abundant, though probably 
scarcely as much so as in the east, and no summer rains occurred, 
no such effects could be seen. Early in September everything was 
badly rusted. Even here, however, one feature in connection with 
the dew-relation is marked. This is the progress of the rust from 
top to bottom of the stalks, seen in all cases of the disease in this 
State. Fig. 17 shows the condition well along in the season, the 
