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": ""}
 potamogtonaceae c^=K:  contact um herbarium .g #V   /Ar6 1173393     w( 14952 alismatales ^IY    oklahoma  Jp      c.b. hellquist g. smith RS,>   *? 19N81-06-19  3u Johnston    An UNITED STATES    CP Potamogeton diversifolius   C2  potam5ogeton 
{"catalogNumber": "1173393", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton diversifolius", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C.B. Hellquist G. Smith", "recordNumber": "14952", "verbatimEventDate": "1981-06-19", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Oklahoma", "county": "Johnston", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}