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": ""}
   FLOYD R. WALLER, JR.  k-   L 0w Cyperus retrrsus  051 nacogdoches   Cyperaceae _       @EP Chapm.    %# ?4 1964-07-06 CYPERUS I,zP   |(d RETRORSUS 159 ZXR  UNITED STATES :g82   >y<e5 poales     ROADSIDE 402-B. $d    +3 85
{"catalogNumber": "", "order": "Poales", "family": "Cyperaceae", "scientificName": "Cyperus retrorsus", "scientificNameAuthorship": "Chapm.", "genus": "Cyperus", "subgenus": "", "specificEpithet": "retrorsus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Floyd R. Waller, Jr.", "recordNumber": "159", "verbatimEventDate": "1964-07-06", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Nacogdoches", "municipality": "", "locality": "Roadside 402-B.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "85", "maximumElevationInMeters": ""}