. Diseases of economic plants. Plant diseases. Tropical Fruits 147 brown decayed areas. In older stages, masses of salmon- colored spores are visible over the decayed areas. The entire fruit at length becomes rotten, wrinkled, and shrunken. Algal leaf-spot (Cephaleuros virescens) is common. LOQUAT Scab {Fusicladium dendriticum (Wallr.) FcL, var. erioho- tryce Scalia.). — In the western part of California scab is reported as serious upon both fruit and leaves. MANGO Anthracnose ^^^' ^""^ (Colletotrichuingloeosporioides Penz.).— This rot of the fruit, flowers, and leaves resembles bitt

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. Diseases of economic plants. Plant diseases. Tropical Fruits 147 brown decayed areas. In older stages, masses of salmon- colored spores are visible over the decayed areas. The entire fruit at length becomes rotten, wrinkled, and shrunken. Algal leaf-spot (Cephaleuros virescens) is common. LOQUAT Scab {Fusicladium dendriticum (Wallr.) FcL, var. erioho- tryce Scalia.). — In the western part of California scab is reported as serious upon both fruit and leaves. MANGO Anthracnose ^^^' ^""^ (Colletotrichuingloeosporioides Penz.).— This rot of the fruit, flowers, and leaves resembles bitter-rot of the apple, and causes much loss in the Caribbean region, in Hawaii, and the Gulf states. OLIVE Knot (Pseudomonas savastanoi EFS.). — Tubercles or galls upon the leaves and branches, and even upon the trunk of the tree, are the first signs of attack. Upon the leaves, the knots are always small, particularly if they are numerous. Upon the small twigs the knots attain the size of a garden pea, while upon the trunk they become 2-3 cm. or more in diameter and finally destroy the tree. The dis- ease was noticed in California in 1893 and appears to be confined to a very small range. Excision should be practiced. Leaf-spot {Ctjdoconium oleagi- num Cast).—According to Bioletti. Fig. 78. R Olive knot. E. Smith. After. 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 work.. Stevens, Frank Lincoln, 1871- [from old catalog]; Hall, John Galentine, 1870- [from old catalog] joint author. New York, The Macmillan company