Fl. forming a double triangle, 100mm wide; perianth segments 42mm long, broadly ovate, rounded at apex, yellow, with pale mucro, spreading, plane, with margins incurling, creased, with midrib showing, of heavy substance, overlapping half or more; corona 44mm long, funnel-shaped, smooth, mouth straight, wavy and lobed, with rim crenate and somewhat flanged. Early. Sunproof

Named at the request of J. Cox, Spalding

There are no photos of "Pennytoft Yellow" in Daffseek.