THE BIOLOGY OF CANADIAN WEEDS.: 54. Crepis tectorum L.

Abstract
Narrow-leaved hawk''s-beard (C. tectorum L.) occurs across most of Canada but is particularly abundant in the parkland zone of Alberta, Saskatchewan and Manitoba. It is a serious weed in forage crop fields and has been increasing rapidly in many areas. This account is a summary of the most recent biological information on C. tectorum, including previously unpublished data.

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