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": ""}
  I4_Ra r. buller (A. Benn.) Rydb. B!        I;? United States    1941-06-23   ^#U     michigan fW   richardsonii yeuR    VH Alismatales  potamogetonaceae v>f    j3 ARENAC potamogeton 4Z)N5   n ~ POTAMOGETON RICHARDSONII
{"catalogNumber": "", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton richardsonii", "scientificNameAuthorship": "(A. Benn.) Rydb.", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "richardsonii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R. Buller", "recordNumber": "", "verbatimEventDate": "1941-06-23", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "Arenac", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}