The investigation of wetwood reported in this paper is the outgrowth of studies of an unusual wilt observed on a large number of American elms in the Village of Hinsdale, Illinois, in July and August, 1939. As studies of the wilt progressed, it became apparent that this wilt was a secondary manifestation of disease intimately related to slime flux, a chronic bleeding at crotches and wounds, to abnormally high sap pressure in the trunk, and to wetwood, a water-soaked, darkly discolored condition of the heartwood. The investigation has shown that all of these conditions—wilting, high sap pressure and water-soaked, discolored wood—are phases of the wetwood disease, and that a bacterium, described as a new species, can cause wetwood in elms.
Publisher
Champaign : Illinois Natural History Survey
Series/Report Name or Number
Illinois Natural History Survey Bulletin; v. 023, no. 04
ISSN
0073-4918
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/44841
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