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": ""}
  _rX nutt.       Typhaceae     d:yu frank c. gates   ^ Poales  bf VAN BUREN [apparently with floaig leaves up to 15 mm wide!] |P  -86.166386 9I-4^   C_im AMERICANUM  M united states  ditches :6 Z:   FOu KEELER 1269266 g   P&~ michigan   V@h SPARGANIUM AMERICANU    < 1373  kL5 42.114637   zYh 1906-08-02  % sparganium 
{"catalogNumber": "1269266", "order": "Poales", "family": "Typhaceae", "scientificName": "Sparganium americanum", "scientificNameAuthorship": "Nutt.", "genus": "Sparganium", "subgenus": "", "specificEpithet": "americanum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Frank C. Gates", "recordNumber": "1373", "verbatimEventDate": "1906-08-02", "habitat": "ditches", "occurrenceRemarks": "[apparently with floating leaves up to 15 mm wide!]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Van Buren", "municipality": "", "locality": "Keeler", "decimalLatitude": "42.114637", "decimalLongitude": "-86.166386", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}