. Diseases of economic plants. Plant diseases. — Sclerotia of lettuce sclerotini- ose, natural size. Original. ascospore qermimr/orr. Fig. 209. — Perithecium with Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stevens, Frank Lincoln, 1871-1934; Hall, John Galentine, 1870-. New York, Macmillan

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Keywords: ., bookauthorstevensf, bookcentury1900, bookdecade1910, bookyear1910