A text-book of mycology and plant pathology . Fig. 104.— Microscopic characters of apple blotch fungus {Phylloslicla solitaria).I,vertical section of pycnidium showing pycnospores; 2, 3, 4, 5, mature pycnospores;6, 7, 8, germinating spores; 9, mycelium. {After Scott, W M.. and Rarer, J. B., Bull.144, U. S. Bureau of Plant Industry, pi. in, March 16, 1909.) like the damping-off fungus, attacking seedling egg plants near the sur-face of the ground. The most destructive fungus of the genus Sphmrop-sis is S. malorum which causes the decay of apples, quinces and pearsand attacks the stem of the app
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A text-book of mycology and plant pathology . Fig. 104.— Microscopic characters of apple blotch fungus {Phylloslicla solitaria).I, vertical section of pycnidium showing pycnospores; 2, 3, 4, 5, mature pycnospores;6, 7, 8, germinating spores; 9, mycelium. {After Scott, W M.. and Rarer, J. B., Bull.144, U. S. Bureau of Plant Industry, pi. in, March 16, 1909.) like the damping-off fungus, attacking seedling egg plants near the sur-face of the ground. The most destructive fungus of the genus Sphmrop-sis is S. malorum which causes the decay of apples, quinces and pearsand attacks the stem of the apple tree producing characteristic cankers.The genus includes about 180 species. The 150 species of the genusConiothyrium are widely spread geographically. The blight of rasp-berry canes is due to Coniothyrium Fuckelii, which has only recentlycome into prominence in the United States. The genus Septoria in- FUNGI IMPERrECTI (dEUTEROMYCETES) 263. Fig. 105.—Septoria leaf spot disease of celery, or celery blight. {After Coons, G. N.and Levin, Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Stat., March. 1916. SPORES,