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": ""}
  rkX F walt.  Em2-  1868   [also Festuca saximontanaA]        X  -83.726329  1 washt3naw   2l?1v P0aceae   r/ 1172221   y s.n.    c MICHIGAN    Festuca octoflora *~   MARK W. HARRINGTON ox=  
{"catalogNumber": "1172221", "order": "", "family": "Poaceae", "scientificName": "Festuca octoflora", "scientificNameAuthorship": "Walt.", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Mark W. Harrington", "recordNumber": "s.n.", "verbatimEventDate": "1868", "habitat": "", "occurrenceRemarks": "[also Festuca saximontana]", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Washtenaw", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-83.726329", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}