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": ""}
     1644135 Wl      n James B. McFarlin POLK kJ #     subsp. rt   mesacantha       Opuntia mesacantha subsp. lata kA     G7,e| florida   lata *   
{"catalogNumber": "1644135", "order": "", "family": "", "scientificName": "Opuntia mesacantha subsp. lata", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "mesacantha", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "lata", "identifiedBy": "", "recordedBy": "James B. McFarlin", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Florida", "county": "Polk", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}