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": ""}
 q Potamogetonaceae   s.n. k.6      United States d<0E     /GW (J.W. Robbins) HaynYes & C.B. Hellquist   Z<>d GRPM 41538 1880-07-16 Ys   e8 River  subsp. b+M   Fred H. Horsford 3MG ^   massachusetts B/Ga   potamogeton F   gemmiparus     
{"catalogNumber": "", "order": "", "family": "Potamogetonaceae", "scientificName": "", "scientificNameAuthorship": "(J.W. Robbins) Haynes & C.B. Hellquist", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "subsp.", "infraspecificEpithet": "gemmiparus", "identifiedBy": "", "recordedBy": "Fred H. Horsford", "recordNumber": "s.n.", "verbatimEventDate": "1880-07-16", "habitat": "River", "occurrenceRemarks": "GRPM 41538", "associatedTaxa": "", "country": "United States", "stateProvince": "Massachusetts", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}