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": ""}
var. [    <u POTAMOGETON BERCHTOLDII VAR. BERGHTOLDII [stipules apparently not connate. p. berctoldi| or hybrid?] [probably p. pusillus var. tenuissimus (rrh73)] o  Potamogetonaceae X1!   9 1937-06-12  7761 H|g        berchtoldii @st    SILVER LAKE, T1S, R4E, SEC. NW CORNER, 42Â° 25' N. LAT., 83Â° 58' W. LONG. lJx9     h 42.42256  2#^I@ washtenaw POTAMOGETON 0! g     United States  W  BERCHTOLDII 2/d 
{"catalogNumber": "", "order": "", "family": "Potamogetonaceae", "scientificName": "Potamogeton berchtoldii var. berchtoldii", "scientificNameAuthorship": "", "genus": "Potamogeton", "subgenus": "", "specificEpithet": "berchtoldii", "verbatimTaxonRank": "var.", "infraspecificEpithet": "berchtoldii", "identifiedBy": "", "recordedBy": "", "recordNumber": "7761", "verbatimEventDate": "1937-06-12", "habitat": "", "occurrenceRemarks": "[Stipules apparently not connate. P. berchtoldii or hybrid?] [probably P. pusillus var. tenuissimus (RRH73)]", "associatedTaxa": "", "country": "United States", "stateProvince": "", "county": "Washtenaw", "municipality": "", "locality": "Silver Lake, T1S, R4E, Sec. NW corner, 42\u00c2\u00b0 25' N. lat., 83\u00c2\u00b0 58' W. long.", "decimalLatitude": "42.42256", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}