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": ""}
    0~h POTAMOGETONACEAE        f.gU POTAMOGETON PUSILLUS SUBSP. GEMMIPARUS     gemmiparus `#  Fred H. Horsford c:7[  1337860 -     pusillus a9y`D    l 4 Charles River, Dedham RIVER &Q V  (J.W. ROBBINS) HAYNES & C.B. HELLQUIS )  
{"catalogNumber": "1337860", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton pusillus subsp. gemmiparus", "scientificNameAuthorship": "(J.W. Robbins) Haynes & C.B. Hellquist", "genus": "", "subgenus": "", "specificEpithet": "pusillus", "verbatimTaxonRank": "", "infraspecificEpithet": "gemmiparus", "identifiedBy": "", "recordedBy": "Fred H. Horsford", "recordNumber": "", "verbatimEventDate": "", "habitat": "River", "occurrenceRemarks": "", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Charles River, Dedham", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}