Refactor the unstructured text into a valid JSON dictionary. The key names follow the Darwin Core Archive Standard. If a key lacks content, then insert an empty string. Fill in the following JSON structure as required: {"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}
 m a8+ Lemna trisulca   O C.M. TARZWELL  -86.28306 4aj U   Z>#p muskegon    gm?! Lemna  MUSKEGON LAKE, STA. 2  &  1474376 _A;R`   araceae  %u  1936-09-09 6~  @    G_;a 352  -* 43.2311   1e  MICHIGAN  Floating.  ?y  ALISMATALES D #   K_ l.  TRISULCA :m*R   S united states
{"catalogNumber": "1474376", "order": "Alismatales", "family": "Araceae", "scientificName": "Lemna trisulca", "scientificNameAuthorship": "L.", "genus": "Lemna", "subgenus": "", "specificEpithet": "trisulca", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C.M. Tarzwell", "recordNumber": "352", "verbatimEventDate": "1936-09-09", "habitat": "Floating.", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Muskegon", "municipality": "", "locality": "Muskegon Lake, Sta. 2", "decimalLatitude": "43.23611", "decimalLongitude": "-86.28306", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}