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": ""}
ST. LOVIS ?VZ,8   U2 george w. letterman  B BOSCII  r (Poir.) Gould & C. A. Clark   1897-07-10 8Sa   mispsouri  cP  dichanthelium boscii L#N    &:67w 152   7N (H dichanthelium    Allenton zv     y^ 2  1428781  poaceae 4    La S.N.  rVv united states poales |Mw   
{"catalogNumber": "1428781", "order": "Poales", "family": "Poaceae", "scientificName": "Dichanthelium boscii", "scientificNameAuthorship": "(Poir.) Gould & C. A. Clark", "genus": "Dichanthelium", "subgenus": "", "specificEpithet": "boscii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "George W. Letterman", "recordNumber": "s.n.", "verbatimEventDate": "1897-07-10", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Louis", "municipality": "", "locality": "Allenton", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "152", "maximumElevationInMeters": ""}