. Fig. 128.—JihT/tisma acei-imou. Two apothecial cushions on leaf of Acer campestre in first summer. A, Leaf-apex of Acer platanoiJe» with the mature apothecial cushions as seen in the second summer, with their chai-acteristic wavy marking, (v. Tubeuf del.) maturity in :May or June. According to Klebahn,^ the spores have a mucilaginous membrane, but this does not throw much light on the problem of how they reach the leaves of trees; wind, however, would seem to be the agent for distribution. In three weeks after infection, leaves show yellow spots; in eight weeks the pycnidia appear. ^Botan. C
. Fig. 128.—JihT/tisma acei-imou. Two apothecial cushions on leaf of Acer campestre in first summer. A, Leaf-apex of Acer platanoiJe» with the mature apothecial cushions as seen in the second summer, with their chai-acteristic wavy marking, (v. Tubeuf del.) maturity in :May or June. According to Klebahn,^ the spores have a mucilaginous membrane, but this does not throw much light on the problem of how they reach the leaves of trees; wind, however, would seem to be the agent for distribution. In three weeks after infection, leaves show yellow spots; in eight weeks the pycnidia appear. ^Botan. CentrcUhlatt, lviii., 1894, p. 321.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
