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Black knot of the plum
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Description: Illustrations depicting a black knot of a plum. "1...represents the general appearance of the black-knot of the plum; 2, a cross-section; 2, an enlarged view of it, showing indentations on the external surface of the conceptacles or perithecia of the fungus; 4, a longitudinal section of the black-knot and branch of a plumtree...5, a typical representation of the perithecia." -Watts, 1874
Source: Fred'k Watts Report of the Commission of Agriculture for the year 1873 (Washington D.C.: Government Printing Office, 1874) 195
Keywords: plum, tree, growth, black, knot
Copyright: 2009, Florida Center for Instructional Technology. See license.
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