Div II ‘Mrs. R. O. Backhouse’ cv.  (L. hansonii x L. martagon)  R: Mrs.R.O.Backhouse I: R.Wallace & Co. Gard.Chron.,Ser.3, 69: 313 (1921).  Indian Yellow (between HCC 6/1 and 6/2), outside slightly flushed Magenta Rose (027/3); slight spotting with Erythrite Red (0027); petals reflexed. Lvs whorled. Stems 1.5-1.9m. June. Am 1921.