weedsci

• weeds


  are undesirable in a specific location and timeframe
• aquatic, terrestrial, epiphytic


  3 types of habitat
• grass, sedge, broadleaves


  grass morphology
• circular or flat; hollow


  grass characteristic
• triangular; solid


  sedge characteristic
• monocot and dicot


  2 types of cotyledon
• parallel venation


  what is monocot
• netted venation


  what is dicot
• weed herbarium


  repository of preserved and properly labeled weed specimens
• collection


  1st step in herbarium
• labeling the specimen


  2nd step in herbarium
• pressing


  3rd step in herbarium
• drying


  4th and last step in herbarium
• late in the afternoon


  best time to collect weeds
• 30 to 40 cm


  desired size of the specimen
• botanical key 


  presents a sequence of parallel yet distinctive characteristics or descriptions pertaining to various plant features
• books and manuals


  provides a wealth of information, photographs, and descriptions of various weed species
• plant systematic specialists


  seeking assistance or consulting with technical experts specializing in _ or Taxonomy
• herbarium


  can function as reference material for weed identification
• mobile applications


  introduced a modern approach to weed identification; feature a collection of photographs and info on various weed species