Fl. 70mm wide; perianth segments 27mm long, broad, oblong in outline, rounded at apex, prominently mucronate, spreading to a little inflexed, plane or with margins slightly incurved, smooth and of heavy substance, overlapping half; the inner segments narrower, ovate, less prominently mucronate, corona 5mm long, disc-shaped, smooth, mouth a little expanded, regularly ribbed, slightly wavy, with rim minutely dentate.

Named after Cranleigh Barton, New Zealand artist and poet.