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": ""}
     x asteraceae     ts 1251756  DUNE REGION d   W united states  G BETWEEN BREVORT LAKE AND LAKE MICHIGAN  G  1s SYMPHYOTRICHUM    FIRMUM l        .A> michigan (Nees) G. L. Nesom -H     CW # JOHN H. EHLERS
{"catalogNumber": "1251756", "order": "", "family": "Asteraceae", "scientificName": "", "scientificNameAuthorship": "(Nees) G. L. Nesom", "genus": "Symphyotrichum", "subgenus": "", "specificEpithet": "firmum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John H. Ehlers", "recordNumber": "", "verbatimEventDate": "", "habitat": "Dune region", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "between Brevort Lake and Lake Michigan", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}