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": ""}
   b=m 4740  ri37D Contact UM Herbarium     St. Francois J=z   w n Nutt.  # 1983-06-16 POACEAE g$AF    W HORDEUM   D united states  hordeum puillum  U!    K- 1416186   ]YJj* poales    5  STEPHAN L. HATCH PUSILLUM / MLC   Missouri zk: 
{"catalogNumber": "1416186", "order": "Poales", "family": "Poaceae", "scientificName": "Hordeum pusillum", "scientificNameAuthorship": "Nutt.", "genus": "Hordeum", "subgenus": "", "specificEpithet": "pusillum", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Stephan L. Hatch", "recordNumber": "4740", "verbatimEventDate": "1983-06-16", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Missouri", "county": "St. Francois", "municipality": "", "locality": "Contact UM Herbarium", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}