Fl. 83 mm wide, creamy white; perianth segments very broad, blunt or truncate, mucronate, a little reflexed, overlapping half; the inner segments ovate, not noticeably mucronate, spreading, with margins wavy; corona narrow cup-shaped, closely ribbed, with deep green in tube, mouth straight, tightly frilled, with rim minutely crenate. 

A description from Guy Wilson’s 1950 catalog is as follows: “Portrush – a lovely late flowering variety, bred from Silver Coin x Crimson Braid. Broad, flat pure white perianth of great substance and almost flat, white crown with deep green eye. Tall, vigorous plant with good stem, very free of bloom and increase; should make a good market flower, coming at the end of the season. Has given some very fine seedlings.”

Named after the seaside resort town in County Atrim, Northern Ireland.