Pear 'Doyenne Blanc', early September. Also known as 'Weisse Herbst Butterbirne', Doyenne', 'St. Michel', 'Citron', and White Doyenne'. "A very old cultivar of uncertain origin, possibly Italian and first recorded in the 17th century. Vigorous and fairly reliably cropping but needs a good summer to develop full flavour." ('Pears' by Jim Arbury and Sally Pinhey)