"American botanist" . . "Peter H. Raven FMLS"@en . . "Raven, Peter H."@en . . . "1936-06-13Z"^^ . . . "1936Z"^^ . "Peter Hamilton Raven FMLS (born June 13, 1936) is a botanist and environmentalist, notable as the longtime director, now President Emeritus, of the Missouri Botanical Garden."@en . . .