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": ""}
f.v. brunett K X     3F 1318174 SALICACEAE g  1965-06-19 -triN   S Mp5 United States 43.286119 -   8_9M? salix    -86.097232 S ]   S# SALIX NIGRA  IN MARSH. !zl   "7' tall shrub" [perhaps not pure]     5 81 Td#N  MARSHALL >       michigan S^#  
{"catalogNumber": "1318174", "order": "", "family": "Salicaceae", "scientificName": "Salix nigra", "scientificNameAuthorship": "Marshall", "genus": "Salix", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "F.V. Brunett", "recordNumber": "581", "verbatimEventDate": "1965-06-19", "habitat": "In marsh.", "occurrenceRemarks": "\"7' tall shrub\" [perhaps not pure]", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "", "decimalLatitude": "43.286119", "decimalLongitude": "-86.097232", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}