Perianth segments broadly ovate in outline, blunt or squarish at apex, prominently mucronate, spreading, with midrib showing, overlapping one third; the inner segments a little narrower and inflexed, with margins wavy, the margins sometimes recurved between shoulder and base; corona short funnel-shaped, loosely ribbed, yellow, with a band of scarlet-orange at rim, mouth straight, lightly frilled, with rim crenate.
There are no photos of "Mabel Cowan" in Daffseek.