Born at Hobart, Tas., on 9 September 1943 and and lately lives at Lower Longley, Tas.
He was educated at Hobart Technical High School (1956-60) and subsequently studied horticulture at the Hobart Technical College. In 1978 he was doing a course in environmental design at the Tasmanian College of Advanced Education. He has had experience in commercial nursery work (1961-64), was an assistant in the Botany Department of the University of Tasmania (1965-67), and was on the staff of the Forest Research Institute, later the Division of Forest Research, CSIRO (1970-77). By 1978 he was a plant consultant and part-time tutor of botany in the Depart-ment of Environmental Design, Tasmanian College of Advanced Education.
His interests include plant taxonomy, ecology and the propagation and cultivation of Australian native plants. He is pre-eminent in his taxonomic and field knowledge of Tasmanian eucalypts and has a wide experience of the genus on the main-land, especially eastern and southern parts. As well as reports on vegetation surveys and management for Tasmanian localities, Gray has written a number of papers, especially since 1971. He is currently employed as Flora Writer (Flora of Tasmania Online), at the Tasmanian Herbarium.
Eucalypt. taxa published by Gray include: Eucalyptus brookeriana AM Gray (1979) and Eucalyptus nebulosa AM Gray (2008).