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": ""}
        b -83.875642   U|xq, Tuck.  J. MOFFIT -[ :*   64n c ALISMATALES   Y 1939-09-08   L UNITED STATES 1280109 zg     potamogeton amplifolius t   KW 42.43531    
{"catalogNumber": "1280109", "order": "Alismatales", "family": "", "scientificName": "Potamogeton amplifolius", "scientificNameAuthorship": "Tuck.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "J. Moffit", "recordNumber": "", "verbatimEventDate": "1939-09-08", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "42.43531", "decimalLongitude": "-83.875642", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}