. Fig. 107. — Cercosporose of celery. Original. aid of a hand lens to bear numerous hyphse. The leaves may bear so many spots as to appear as though scorched, and often death results to the entire plant. The disease spreads most rapidly in damp warm weather. Marked difference in varietal resistance was reported by Tracy1 as early as 1885, the Boston Market and Golden iSee Lamson-Scribner, F., Dept. Agr. Rpt. for 1886, p. 117.

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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910