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": ""}
  j)_ PUMILA  42.358464 US     N -84.122142      betulaceae  -M0g  MICHIGAN GzW        E FAGALES       On Roe Rd., Lyndon Twp. !  R4  1341800 k5+Pe  Betula pumila DyD x 
{"catalogNumber": "1341800", "order": "Fagales", "family": "Betulaceae", "scientificName": "Betula pumila", "scientificNameAuthorship": "", "genus": "", "subgenus": "", "specificEpithet": "pumila", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "On Roe Rd., Lyndon Twp.", "decimalLatitude": "42.358464", "decimalLongitude": "-84.122142", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}