Mary Gibby, British botanist and professor (born 1949)

Professor Mary Gibby was a British botanist, pteridologist and cytologist. She was an expert on ferns, becoming president of the British Pteridological Society and long-time editor of its journal, the Fern Gazette. Gibby particularly studied the cytology of the genera Dryopteris and Pelargonium.

July 17 is the 198th day of the year in the Gregorian calendar; 167 days remain until the end of the year.