Alexander (Alec) M. Wilson and Gwendolen Evelyn
Presteigne, Radnorshire (now Powys), Wales
Alexander (Alec) M. Wilson and Gwendolen EvelynPerianth segments very broad, blunt, pale primrose yellow, spreading, concave at apex, regular, overlapping one-third to a half; the inner segments more narrowly ovate, only very slightly mucronate, with margins a little wavy; corona bowl-shaped, lightly ribbed, orange, mouth straight, more strongly ribbed, even or a little wavy, with rim minutely and irregularly notched.