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": ""}
   $f6Dv Scattered tall plants in opening. (PURSH) A. HELLER Gn     Michigan   #j#Gl Muskegon   v|7s 12173    Muskegon River bottomlands,  of E River Rd., at bend S of Oak Rd., ca. 12 km NE of Muskegon. ;m``        5K Echinochloa walteri         
{"catalogNumber": "", "order": "", "family": "", "scientificName": "Echinochloa walteri", "scientificNameAuthorship": "(Pursh) A. Heller", "genus": "", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "", "recordNumber": "12173", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "Scattered tall plants in opening.", "associatedTaxa": "", "country": "", "stateProvince": "Michigan", "county": "Muskegon", "municipality": "", "locality": "Muskegon River bottomlands, S of E River Rd., at bend S of Oak Rd., ca. 12 km NE of Muskegon.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}