Mis-called an H.T. in the caption; accompanying text properly calls it an HP. From The Gardener's Magazine, 1913, p. 805. Given in the same publication's p. 602 as a cross between 'Captain Hayward and 'Mrs. John Laing', other more authoritative sources such as the Journal of the RHS replace in the parentage Laing with Laing's sport 'Mrs. F.W. Sanford'.
