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": ""}
 H izard   7tMDo aquatic in edge of white river, 1 1/2 miles west of croker     *vwH 20515  DUBIA ]  sec. 16, t14n, r8w DWu   heteranthera dubia P<?          <eL R. Dale Thomas     1659765 9  1970-08-04 xIRg   united states m:7 
{"catalogNumber": "1659765", "order": "", "family": "", "scientificName": "Heteranthera dubia", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "dubia", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "R. Dale Thomas", "recordNumber": "20515", "verbatimEventDate": "1970-08-04", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Izard", "municipality": "", "locality": "Aquatic in edge of White River, 1 1/2 miles west of Croker", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "Sec. 16, T14N, R8W", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}