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": ""}
 < 1867     aw2 S.N. ANN ARBOR Q,+);    c J washtenaw   e A.B. Lyons, M.D. Caryophyllales 9=   i[ united states  persicaria E  PERSICARIA HYDROPIPEROIDES  u   OI HYDROPIPEROIDES      AC,k polygonaceae    mVv!D 42.270872    5 A! (MICHX.) SMALL
{"catalogNumber": "", "order": "Caryophyllales", "family": "Polygonaceae", "scientificName": "Persicaria hydropiperoides", "scientificNameAuthorship": "(Michx.) Small", "genus": "Persicaria", "subgenus": "", "specificEpithet": "hydropiperoides", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "A.B. Lyons, M.D.", "recordNumber": "s.n.", "verbatimEventDate": "1867", "habitat": "", "occurrenceRemarks": "", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Washtenaw", "municipality": "", "locality": "Ann Arbor", "decimalLatitude": "42.270872", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}