. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 129 on plum and wild cherry, causing "plum ; The ovary is the seat of attack. The mycelium after bud infection pervades the mesocarp which hypertrophies and alone produces a much enlarged fruit, usually with entire sacrifice of the other fruit parts. Asci are formed over the diseased surface much as in the last species. The mycelium is perennial in the bast and grows out into the new shoots and buds each spring. In- fection also reaches other shoots and trees by means of the spo
. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 129 on plum and wild cherry, causing "plum ; The ovary is the seat of attack. The mycelium after bud infection pervades the mesocarp which hypertrophies and alone produces a much enlarged fruit, usually with entire sacrifice of the other fruit parts. Asci are formed over the diseased surface much as in the last species. The mycelium is perennial in the bast and grows out into the new shoots and buds each spring. In- fection also reaches other shoots and trees by means of the spores. Ascus elongate-cylin- dric, 30-60 x 8-15 m] spores 8, globose 4-5 /i. Perennial. (Fcl.)Sad.«-" produces the witches broom effect upon culti- vated and wild cherries. It is common in Eu- rope, rare in America. Perennial; asci clavate 30-50 X 7-10 n; spores 8, forming conidia in the ascus, oval, 6-9 x 5-7 1*. On Prunus avium, P. Europe. T. mirabilis (Atk.) Gies.*' '* grows on leaf buds and twigs of Prunus angustifolia, P. hortulana, P. americana in North America. Perennial; sporing on the fruits and tips of branches of the host; asci subcylindric, blunt above, 25-45 x 8-10 n; spores 8, ovate. T. longipes (Atk.) Gies. is on Pruniis americana in North America, causing plum pockets.* Perennial; sporing on young fruits; asci cylindric, truncate or not, 30-40 X 7-10 /t; spores 8, globose or ovate, 3-4 /i. T. rhizipes (Atk.) Gies. Known only in North America, caus- ing pockets on Japanese plums; * probably of wider Fig. 88.—T. deformans. Young and old asci. After Pierce. cerasus, etc. in North America and. 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 Stevens, Frank Lincoln, 1871-1934. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1913
