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": ""}
MICHIGAN Fv     UiRrt UNITED STATES   AKlismatales e    5t$ Potamogetonaceae       FrF8W POTAMOGETON 1893-08-18 mK   MORONG |    << Br A.J. PIETERS  G`a& MACOMB OR ST. CLAIR  #mrYd -82.73896 var. aB    | maximus  POTAMOGETON GRAMINEUS VAR. MAXIMUS $?#   , +4t 8
{"catalogNumber": "", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton gramineus var. maximus", "scientificNameAuthorship": "Morong", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "var.", "infraspecificEpithet": "maximus", "identifiedBy": "", "recordedBy": "A.J. Pieters", "recordNumber": "8", "verbatimEventDate": "1893-08-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Macomb or St. Clair", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-82.73896", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}