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": ""}
    2Am% Carex umbellata SCHKUHR EX WILLD. + D?N      allison w. gusick, forest buchanan B0M    @4b UNITED STATES 24253 qVm$7   a e side of co rt 42, 1/4 mi n, jct of co rt 44, ne of terra alta, terra alta quad.  Cyperaceae  >)   wx +DF 1390673    kRJW umbellata   CAREX :6    r preston  
{"catalogNumber": "1390673", "order": "", "family": "Cyperaceae", "scientificName": "Carex umbellata", "scientificNameAuthorship": "Schkuhr ex Willd.", "genus": "Carex", "subgenus": "", "specificEpithet": "umbellata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Allison W. Cusick, Forest Buchanan", "recordNumber": "24253", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Preston", "municipality": "", "locality": "E side of Co Rt 42, 1/4 mi N, jct of Co Rt 44, NE of Terra Alta, Terra Alta Quad.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}