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": ""}
  U;$ 1927-06-21   G: -83.944942  heuchera g5N:p   7973 M)I    LENAWEE      u< 1464969    H??h SAXIFRAGACEAE 42.003933 <NR    hirsuticaulis ehw   (Wheelock) Rosend., Butters & Lakela -X6!     _ elizabeth f. wells Heuchera americana var. hirsuticaulis 1UIgA   Tecumseh. 5KdJw   7 AMERICANA
{"catalogNumber": "1464969", "order": "", "family": "Saxifragaceae", "scientificName": "Heuchera americana var. hirsuticaulis", "scientificNameAuthorship": "(Wheelock) Rosend., Butters & Lakela", "genus": "Heuchera", "subgenus": "", "specificEpithet": "americana", "verbatimTaxonRank": "", "infraspecificEpithet": "hirsuticaulis", "identifiedBy": "Elizabeth F. Wells", "recordedBy": "", "recordNumber": "7973", "verbatimEventDate": "1927-06-21", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Lenawee", "municipality": "", "locality": "Tecumseh.", "decimalLatitude": "42.003933", "decimalLongitude": "-83.944942", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}