title: Mary K. Bryan
text: # Mary K. Bryan
  
  Mary Katherine Bryan (February 13, 1877 – February 22, 1962) was an American botanist and phytopathologist. Much of her research involved leaf spots and cankers caused by bacteria.
  
  ## Life and career
  
  Bryan was born in Prince George's County, Maryland, on February 13, 1877. She earned a bachelor's degree from Stanford University in 1908. She worked at the Bureau of Plant Industry in the United States Department of Agriculture as a scientific assistant and assistant pathologist from 1909 to 1918.
  
  She and Nellie A. Brown worked for Erwin Frink Smith.
  
  Bryan died on February 22, 1962, in Napa, California.
  
  