. Fig. 40. Antirrhinum Diseases. a. Rust on leaves, h. root knot, c. Uredo spores of Puccinia antir- rhini (after Schwarze), d. anthracnose lesions on stems and leaves, e. sec- tion through an acervulus of CoUetotrichiim antirrhini f. spores of C. antirrhini, (d-f after Stewart, F. C).

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