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": ""}
 mark h.- mayfield b[   YD3% Essex   +P 7 CANADA  6| sF SUBILS  Point Pelee National Park, Mersea Township w      [6~o Euphorbia davidii       WKh9| MALPIGHIALES     U6h& davidii   I>49 uphorbiaceae  dry, gravelly roadside; locally frequent 6~   N. 1976-08-20 
{"catalogNumber": "", "order": "Malpighiales", "family": "Euphorbiaceae", "scientificName": "Euphorbia davidii", "scientificNameAuthorship": "Subils", "genus": "", "subgenus": "", "specificEpithet": "davidii", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "Mark H. Mayfield", "recordedBy": "", "recordNumber": "", "verbatimEventDate": "1976-08-20", "habitat": "Dry, gravelly roadside; locally frequent", "occurrenceRemarks": "", "associatedTaxa": "", "country": "Canada", "stateProvince": "", "county": "Essex", "municipality": "", "locality": "Point Pelee National Park, Mersea Township", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}