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": ""}
united states ,uj^      araceae   MIXED WITH LEMNA, WOLFFIA, AND WOLFFIELLA ?   y?] , LEMNA OBSCURA  G. L. WEBSTER & K. I. MILLER |   (Austin) Daubs vy1,P   # ALISMATALES Lemna ,2RP   . 1663061     .gYpj hempstead  obscura D4 *       &v@OB e. landolt  
{"catalogNumber": "1663061", "order": "Alismatales", "family": "Araceae", "scientificName": "Lemna obscura", "scientificNameAuthorship": "(Austin) Daubs", "genus": "Lemna", "subgenus": "", "specificEpithet": "obscura", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "E. Landolt", "recordedBy": "G. L. Webster & K. I. Miller", "recordNumber": "", "verbatimEventDate": "", "habitat": "Mixed with Lemna, Wolffia, and Wolffiella", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Hempstead", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}