(Barr & Sons; pre-1921)
A family of consummate nurserymen rather than hybridists, ‘Ptolemy’ is a rare example of a Barr-raised cultivar. On opening, the expanded, recurving rim to the smooth, chiselled, soft clear yellow trumpet is divided into six, obscure lobes. As the flower develops, the rim rolls back, flattens, and the margin becomes evenly crenate, foreshortening the trumpet so it resembles a sturdy Large-cupped variety rather than a Division 1 Trumpet. Presumably named after the second-century Greco-Roman mathematician and astronomer, who promulgated the theory that the earth is the centre of the universe.