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": ""}
  p+  CAMBRIDGE, GRAY BOTANIC GARDEN   F-z LrAMIALES spreng.kP.2~   C,:mr GRPM 52682 MASSACHUSETTS B1O`   `CJ rigida     1520688  |_G     A> 1904-08-05 Emma J.Cole : e   S Verbena rigida  js<j_ VERBENACEAE s.n.   [9  middlesex d:kbm         a  UNITED STATES
{"catalogNumber": "1520688", "order": "Lamiales", "family": "Verbenaceae", "scientificName": "Verbena rigida", "scientificNameAuthorship": "Spreng.", "genus": "", "subgenus": "", "specificEpithet": "rigida", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Emma J. Cole", "recordNumber": "s.n.", "verbatimEventDate": "1904-08-05", "habitat": "", "occurrenceRemarks": "GRPM 52682", "associatedTaxa": "", "country": "United States", "stateProvince": "Massachusetts", "county": "Middlesex", "municipality": "", "locality": "Cambridge, Gray Botanic Garden", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}