 OLD FIELDSGROWN UP WITH CRATAEGUS SPP., xLOCALLY PASTURED AND, IN A FEW AREAS, SEEPY WITH DENSE GROWTH OF YOUNG THUJA OCCIDENTALIS *n!h5      Araeae *l~  columbiana a`    6892     . karst. h  ontario , rv    < ALISMATALES     CANADA  a. a. reznicek BC@  grey DjT  WOLFFIA COLUMBIANA jj     YLll; DENSLY ABUNDANT WITH SPIRODELA POLYRHIZA ON SURFACE OF SMALL POND IN OLD FIELD  = $: Wo|ffia  
{"catalogNumber": "", "order": "Alismatales", "family": "Araceae", "scientificName": "Wolffia columbiana", "scientificNameAuthorship": "H. Karst.", "genus": "Wolffia", "subgenus": "", "specificEpithet": "columbiana", "verbatimTaxonRank": "", "infraspecificEpithet": "", "identifiedBy": "", "recordedBy": "A. A. Reznicek", "recordNumber": "6892", "verbatimEventDate": "", "habitat": "Old Fields grown up with Crataegus spp., locally pastured and, in a few areas, seepy with dense growth of young Thuja occidentalis", "occurrenceRemarks": "densly abundant with Spirodela polyrhiza on surface of small pond in old field", "associatedTaxa": "", "country": "Canada", "stateProvince": "Ontario", "county": "Grey", "municipality": "", "locality": "", "decimalLatitude": "", "decimalLongitude": "", "verbatimCoordinates": "", "minimumElevationInMeters": "", "maximumElevationInMeters": ""}