[2][4] The only specimen grows on a cliff below Stokeleigh Camp at Leigh Woods in North Somerset and cannot be accessed without ropes.

[4][7][8] The rock climber found the rare hybrid on a Carboniferous Limestone cliff at Avon Gorge in 2005.

[2][4][6] DNA analysis of nuclear microsatellites at the University of Bristol was performed and confirmed the nature of the new hybrid.

[5][6] The tree was officially named after Houston in February 2009 in Volume 27, Part 3 of Watsonia, the journal of the Botanical Society of the British Isles.

[11] The festival, hosted every two years by Bristol, was founded in 1982 and is dedicated to "celebrating, applauding and encouraging excellence and responsibility within the wildlife and environmental filmmaking industry.