Fls 2-3 per stem, 71 mm wide; perianth segments very broad, rounded at apex, clear primrose yellow, with prominent white mucro, spreading, somewhat concave, smooth, overlapping half; the inner segments a little narrower, less obviously mucronate, with margins incurled or wavy, shouldered at base; corona short and broad funnel-shaped, lightly ribbed, darker in tone than the perianth, mouth straight, occasionally split and overlapping, wavy, with rim minutely crenate.

According to The American Horticultural Society’s 1937 issue of the The American Daffodil Year Book, Guy L. Wilson’s article “Some Modern Daffodils for Garden Decoration” states: “Trevithian is perhaps a more reliable doer and freer bloomer; its flowers are usually borne in twos and threes, and are shallow cupped, soft clear self yellow of faultless form ad the loveliest quality.”

Received the Royal Horticultural Society(RHS) Award of Garden Merit(AGM) in 1995 and the award was rescinded by the RHS in 2012.