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": ""}
    2-6 in. weed, flowers wbite with greenish centers. i<mO?       f$ C.M. Rowell, Jr. & H.D. Irby      X sVX Lourteig  v E  melindae MEXICO l0w8    -99.18234 x   K6g oxalis      kM 1953-06-22 
{"catalogNumber": "", "order": "", "family": "", "scientificName": "", "scientificNameAuthorship": "Lourteig", "genus": "Oxalis", "subgenus": "", "specificEpithet": "melindae", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "C.M. Rowell, Jr. & H.D. Irby", "recordNumber": "", "verbatimEventDate": "1953-06-22", "habitat": "", "occurrenceRemarks": "2-6 in. weed, flowers white with greenish centers.", "associatedTaxa": "", "country": "Mexico", "stateProvince": "", "county": "", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "-99.18234", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}