Check list of diseases of economic plants in the United States (1366) (20415461780)

Title: Check list of diseases of economic plants in the United States
Identifier: checklistofdisea1366ande (find matches)
Year: 1926 (1920s)
Authors: Anderson, Paul J. (Paul Johnson), 1884-
Subjects: Plant diseases; Plant diseases
Publisher: Washington, D. C. : U. S. Dept. of Agriculture
Contributing Library: U.S. Department of Agriculture, National Agricultural Library
Digitizing Sponsor: U.S. Department of Agriculture, National Agricultural Library



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4 BULLETIN 1366, U. S. DEPARTMENT OE AGRICULTURE Rhysotheca, for which the common and well-established name Plasmopara is retained. Polypores.—Of the wood-inhabiting polypores and other Hymen- omycetes, only those are included which are known to cause definite diseases or rots of living trees or timber and for which the symptoms have been described in pathological literature. Saprophytic species, or those whose economic importance has not been demonstrated, have been omitted. In the choice of names, the more common usage has been followed. Bacteria.—The names used for the bacterial pathogens are those in most common use, as the bacteriologists apparently are not yet entirely agreed in regard to some recently proposed changes.
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frS ^N/^^gf /f/SS/SS//^/ /WZZ^fX Fig. 1.—Geographic areas used in the list: New England, Great Plains States, upper Mississippi Valley, lower Mississippi Valley, Ohio Valley States, Middle Atlantic States, and South Atlantic States Botrytis.—All pathogens of this genus, with a few exceptions, are here listed under the names Botrytis sp. or Botrytis drierea Auct. It is probable that several distinct species are included under these names, but since there is no satisfactory basis now available for specific distinction, it seems best for present purposes to include all under these names, pending the appearance of a satisfactory revision of the genus. Synonyms.—Synonyms are given in parentheses in certain pleo- morphic species in which the perfect stage is known and in some other cases in which it seems desirable. In general, the name which has been applied to the perfect stage has been adopted.