Loudon, John C.: Arboretum et fruticetum britannicum / From Celastraceæ, p. 495, to Apocynaceæ, p. 1256, inclusive. London : printed for the Author : and sold by Longman, Orme, Brown, Green, and Longmans : the partially coloured and coloured copies, by James Ridgway and Sons, 1838