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": ""}
  Wz Potamogeton gramineus var. gramineus   48.041963 t6O1i   Z= gramineus    8 alismatales   potamogetonaceae Jl   michigan G |K   DQ ON EDGE OF RICHIE LAKE  01 1280873 carl o. grassl[ E>B      gramineus g B  1931-08-20     _, united states  i5le royale  _   u POTAMOGETON VAR.-  2 
{"catalogNumber": "1280873", "order": "Alismatales", "family": "Potamogetonaceae", "scientificName": "Potamogeton gramineus var. gramineus", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "gramineus", "verbatimTaxonRank": "var.", "infraspecificEpithet": "gramineus", "identifiedBy": "", "recordedBy": "Carl O. Grassl", "recordNumber": "", "verbatimEventDate": "1931-08-20", "habitat": "on edge of Richie Lake", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Michigan", "county": "", "municipality": "", "locality": "Isle Royale", "decimalLatitude": "48.041963", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}