. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 'i ^ Photomicrographs of Cross and Longitudinal Sections of Stems of Heat-Cankered Flax Plants of the Same Age as Those Shown in Plate III. A, injured, constricted area of plant. This cross section the entire cortex destroyed. The cortical cells are broken down, but the stelar tissues are still functioning. There is no evidence of fungous mj'cehum in the injured tissues. Compare this with B. B, cross section immediately above the cankered area. AH tissues appear healthy. Compare this with A. C, longitudinal sect
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 'i ^ Photomicrographs of Cross and Longitudinal Sections of Stems of Heat-Cankered Flax Plants of the Same Age as Those Shown in Plate III. A, injured, constricted area of plant. This cross section the entire cortex destroyed. The cortical cells are broken down, but the stelar tissues are still functioning. There is no evidence of fungous mj'cehum in the injured tissues. Compare this with B. B, cross section immediately above the cankered area. AH tissues appear healthy. Compare this with A. C, longitudinal section through the upper portion of an injured, constricted area. This shows the cortex de- stro3'ed in the cankered area. D longitudinal section of a young flax stem immediately above the heat-cankered 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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