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": ""}
L. T?z$   dEM Kentucky   ZE CONTACT UM HERBARIUM    1938-06-28 <       + 1207442 calamus Ln     I^e acorus united states `z Ok   48 ACORALES acoraceae iMh    2886 -7tc   Vg= 1 Mary E. Wharton     0=0Q ACORUS CALAMUS
{"catalogNumber": "1207442", "order": "Acorales", "family": "Acoraceae", "scientificName": "Acorus calamus", "scientificNameAuthorship": "L.", "genus": "Acorus", "subgenus": "", "specificEpithet": "calamus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Mary E. Wharton", "recordNumber": "2886", "verbatimEventDate": "1938-06-28", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Kentucky", "county": "", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}