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": ""}
Barbara Ertter & J.L. Reveal x?   MAYFIELD TWP., CA. 6 MI. NNW OF LAPEER. U       43.131682  ( 1980-05-23       $ 15209   t canadensis  Hk@@ Poten7illa canadensis Edward G. Voss m   q L.    :JUB POTENTILLA -83.364408 R     /tmF "flowers yellow" [closer to canadensis than most of our specimens - egv]    _ %x rosales
{"catalogNumber": "", "order": "Rosales", "family": "", "scientificName": "Potentilla canadensis", "scientificNameAuthorship": "L.", "genus": "Potentilla", "subgenus": "", "specificEpithet": "canadensis", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Barbara Ertter & J.L. Reveal", "recordedBy": "Edward G. Voss", "recordNumber": "15209", "verbatimEventDate": "1980-05-23", "habitat": "", "occurrenceRemarks": "\"Flowers yellow\" [Closer to canadensis than most of our specimens - EGV]", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "", "municipality": "", "locality": "Mayfield Twp., ca. 6 mi. NNW of Lapeer.", "decimalLatitude": "43.131682", "decimalLongitude": "-83.364408", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}