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": ""}
 john k. morton &JpnI           _A americanus        ~(G6 Muhl. ex W. P. C. 3Barton       ^6 [Pollen voucher] [Cytological voucher] Waterloo Y(`m   
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Muhl. ex W. P. C. Barton", "genus": "", "subgenus": "", "specificEpithet": "americanus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "John K. Morton", "recordNumber": "", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "[Pollen voucher] [Cytological voucher]", "associatedTaxa": "", "country": "", "stateProvince": "", "county": "Waterloo", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}