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": ""}
    SONOMA dr       n+gpi GRPM46601 cuneatus of  ceanothus cuneatus       h Rhamnaceae S.N.  zx  1506442 nl    F, UNITED STATES    Rosales I   V  MICHENER & BIOLETTI    California  Nutt. zh2 
{"catalogNumber": "1506442", "order": "Rosales", "family": "Rhamnaceae", "scientificName": "Ceanothus cuneatus", "scientificNameAuthorship": "Nutt.", "genus": "", "subgenus": "", "specificEpithet": "cuneatus", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "Michener & Bioletti", "recordNumber": "s.n.", "verbatimEventDate": "", "habitat": "", "occurrenceRemarks": "GRPM 46601", "associatedTaxa": "", "country": "United States", "stateProvince": "California", "county": "Sonoma", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}