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": ""}
  ) R` United States MASSACHUSETTS :[k  subsp. 1k   norfolk  l2 L    AyY  GRPM 41538 .n. n,G<X  gemmiparus -    ; Potamogeton      % 8i) pusillus CHARLES RIVER, DEDHAM2 -1$N     potamogetonaceae P      d 1337860 River  h`^   1880-07-16 o)   
{"catalogNumber": "1337860", "order": "", "family": "Potamogetonaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "pusillus", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "gemmiparus", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1880-07-16", "habitat": "River", "occurrenceRemarks": "GRPM 41538", "associatedTaxa": "", "country": "United States", "stateProvince": "Massachusetts", "county": "Norfolk", "municipality": "", "locality": "Charles River, Dedham", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}