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": ""}
 W^  s.n.    = INK ON ORIGINAL LABEL IS FADING AND IS NEARLY ILLEGIBLE AS OF 2006. MISSOURI M     l|3dv h. eggert  _K?t St. Louis UNITED STATES  C;  ALISMATALES ~7ggU    # araceae    1875-09 `H0    ( Lemna perpusilla  Lakes Z!T_     u 1208857     g=- r st. ouis  e&  perpusilla  ?+?4X torr.
{"catalogNumber": "1208857", "order": "Alismatales", "family": "Araceae", "scientificName": "Lemna perpusilla", "scientificNameAuthorship": "Torr.", "genus": "", "subgenus": "", "specificEpithet": "perpusilla", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "H. Eggert", "recordNumber": "s.n.", "verbatimEventDate": "1875-09", "habitat": "Lakes", "occurrenceRemarks": "Ink on original label is fading, and is nearly illegible as of 2006.", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Louis", "municipality": "", "locality": "St. Louis", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}