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": ""}
  s.n.       r Purshia tridentata  f@j TRIDENTATA     (pursh) dc. rI     I)= 2438  d PURSHIA    v Gunnison 1893-07 qF    NSg% 1502436 slopes 7j%      H rosaceae 
{"catalogNumber": "1502436", "order": "", "family": "Rosaceae", "scientificName": "Purshia tridentata", "scientificNameAuthorship": "(Pursh) DC.", "genus": "Purshia", "subgenus": "", "specificEpithet": "tridentata", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "s.n.", "verbatimEventDate": "1893-07", "habitat": "Slopes", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Gunnison", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "2438", "maximumElevationInMeters": ""}