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": ""}
  Rcy rhynchospora mixta   POALES z@   1894-05-16 k2S>   United States gj#bXs   v rhynchospora MIXTA (r   Cyperaceae B>    George V. Nash j   ?*  BRITTON  ct2K% UICINITY OF EUSTIS.    florida ,tx;   S 1400749     s_.  839  
{"catalogNumber": "1400749", "order": "Poales", "family": "Cyperaceae", "scientificName": "Rhynchospora mixta", "scientificNameAuthorship": "Britton", "genus": "Rhynchospora", "subgenus": "", "specificEpithet": "mixta", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George V. Nash", "recordNumber": "839", "verbatimEventDate": "1894-05-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Florida", "county": "", "municipality": "", "locality": "Vicinity of Eustis.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}