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": ""}
poales & Xs   1878-06-18 <    United States  t  heinrich k.d. eggert `e,         2227 ZRK~  ILLINOIS O-Z  horseshoe lake. ZeX A  1446529 82w   Michx. Sh:    Juncus d   % Madison     #F  JUNCUS% ACUMINATUS
{"catalogNumber": "1446529", "order": "Poales", "family": "", "scientificName": "Juncus acuminatus", "scientificNameAuthorship": "Michx.", "genus": "Juncus", "subgenus": "", "specificEpithet": "", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Heinrich K.D. Eggert", "recordNumber": "2227", "verbatimEventDate": "1878-06-18", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "Illinois", "county": "Madison", "municipality": "", "locality": "Horseshoe Lake.", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}