. Botany for agricultural students. Plants. 378 THALLOPHYTES Other Ascomycetes. — A study of a few types of the Ascomy- cetes has giveu a general notion of their habits but no notion at all of their extensive number. However, with this general acquaintance, other forms can be easily understood. Some other common destructive forms are the Apple and Pear Scab ^ (Fig. 330), the Bitter Rot of Apples 2 (Fi^. 331), Peach Mildew,^ Black. Fig. 330. — Apple attacked by Scab, Venturia Pomi. Photographed by Whetzel. Rot of Grapes/ and the Wilt disease of Cotton, Watermelons, and Cowpeas,^ etc. Summary of
. Botany for agricultural students. Plants. 378 THALLOPHYTES Other Ascomycetes. — A study of a few types of the Ascomy- cetes has giveu a general notion of their habits but no notion at all of their extensive number. However, with this general acquaintance, other forms can be easily understood. Some other common destructive forms are the Apple and Pear Scab ^ (Fig. 330), the Bitter Rot of Apples 2 (Fi^. 331), Peach Mildew,^ Black. Fig. 330. — Apple attacked by Scab, Venturia Pomi. Photographed by Whetzel. Rot of Grapes/ and the Wilt disease of Cotton, Watermelons, and Cowpeas,^ etc. Summary of Ascomycetes. — The Ascomycetes have no water habits and their chief resemblance to the Algae is in the character of their sex organs and fruiting bodies. The plant body ranges 1 A Contribution to Our Knowledge of Apple Scab. Bulletin 96, Mon- tana Agr. Col. Exp. Sta., 1914. - Bitter Rot of Apples. Bulletin U, Bur. PI. Ind., U. S. Dept. of Agricul- ture, 1903. 2 Peach Mildew. Bulletin 107, Colorado Agr. Exp. Sta., 1906. ^ The Control of Black-Rot of Grape. Bulletin 155, Bur. PI. Ind., U. S. Dept. Agricultiu-e, 1909. ^ Wilt Disease of Cotton, Watermelon, and Cowpea. Bulletin 17, Division of Vegetable Path., U. S. Dept. Agriculture, 1899. Also see Spraying Practice for Orchard and Garden. Bulletin 127, Iowa Agr. Exp. Sta., 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 Martin, John N. (John Nathan), b. 1875. New York, John Wiley ; London, Chapman & Hall
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