Background
Humphreys was born in Kalgoorlie.
Humphreys was born in Kalgoorlie.
He attended University of Western Australia, where he participated in track and running events. He graduated with a Diploma in Commerce in 1934.
He discovered Banksia grossa in the Stirling Range in 1967. He took a position with the Commonwealth Public Service in Immigration and Social Services. He later returned to Western Australia as State Director of Social Services.
Author Alex George said Humphreys conceived the idea of a series of popular books on plants such as Banksias, Dryandras, and Verticordias, and endeavoured to photograph every species of Banksia.
His enthusiasm prompted George to finish a book on banksias, after the conclusion of his monograph "The genus Banksia L.f. (Proteaceae)". Humphreys donated his slides of flowers to the Western Australian Herbarium and the Australian National Botanic Gardens.
At the time of his death the Social Services Department was located in the building which bore his name, Humphreys House. The F.W. Humphreys Perpetual Trophy at University of Western Australia is named in his honor.
American botanist Sherwin Carlquist named a triggerplant from the Great Victoria Desert, Stylidium humphreysii, in his honour in 1969.