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 JACKSON  HEUCHERA @      a3 42.2226  3UZv 1893-06-18 SAXIFRAGACEAuE S   . jackson, new cemetery. Heuchera richardsonii l k   ^U:q michigan  I-DA+ SAXIFRAGALES  S.N.  $~7    h   5 R. Br.       RICARDSONII +    Uoc -84.3943   flPPL 1464978
{"catalogNumber": "1464978", "order": "Saxifragales", "family": "Saxifragaceae", "scientificName": "Heuchera richardsonii", "scientificNameAuthorship": "R. Br.", "genus": "Heuchera", "subgenus": "", "specificEpithet": "richardsonii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1893-06-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Jackson", "municipality": "", "locality": "Jackson, New Cemetery.", "decimalLatitude": "42.2226", "decimalLongitude": "-84.3943", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}