Council of Heads of Australasian Herbaria
“Mr. G. Clowes, a gentleman who visited New South Wales for his health, and transmitted to Kew very copious and fine specimens of New South Wales Plants.” (Hooker, J.D. (1859), 'Introductory Essay to the Flora of Tasmania' cxii–cxxviii in 'Outlines of the progress of the Botanical discovery in Australia').
"We have a few of his specimens in the National Herbarium, Sydney. I know nothing further about him" (Maiden).
Source: Maiden, J.H. (1908) Records of Australian botanists- (a) General, (b) New South Wales. Journal and Proceedings of the Royal Society of New South Wales for 1908 . 42:60-132