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": ""}
  %R danthonia sericea SERICEA $NP   mississippi Mr0D    o Danthonia 4531 ^*s6   G_1 C samuel m. tracy 1898-04-15  B    =f  NUTT.  y v HARRISON   h 93 poales    1409892  U   s$~z poaceae     united states 1     z+ CONTACT UM HERBARIUM
{"catalogNumber": "1409892", "order": "Poales", "family": "Poaceae", "scientificName": "Danthonia sericea", "scientificNameAuthorship": "Nutt.", "genus": "Danthonia", "subgenus": "", "specificEpithet": "sericea", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Samuel M. Tracy", "recordNumber": "4531", "verbatimEventDate": "1898-04-15", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Mississippi", "county": "Harrison", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}