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": ""}
m.r. raymond 2F    potamogeton (k<V     o<cr illinoensis   ^ 6.* depth of wter: 6 in bottom: gravel Huron River 7     U(bA< United States      599 4   1938-08-23 REg   -r  Potamogetonaceae MichiganBeDC3     
{"catalogNumber": "", "order": "", "family": "Potamogetonaceae", "scientificName": "", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "illinoensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "M.R. Raymond", "recordNumber": "599", "verbatimEventDate": "1938-08-23", "habitat": "Depth of Water: 6 in Bottom: gravel", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Huron River", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}