I thought that the term was simply an Oxymoron. But the cultivar has distinct character. It is a true sweet lemon - flavorful, medium-sized fruit is excellent for use in juice and cooking. Has few seeds. And the flowers are fragrant, beautiful, with blushed pink. It is a vigorous upright shrub.
Pomona Sweet Lemon has good responses from various friends. It is just simply sold as Sweet Lemon by Menlo Growers in Gilroy. The Pomona Sweet Lemon is available from the UCR CCPP budwood program from their screenhouse materials.
The Pomona Sweet Lemon was contributed by La Verne Nursery to UCR CCPP budwood program. La Verne is still selling the Pomona Sweet Lemon to wholesale customers and not retail. Clifton's Nursery is among one of La Verne's big customers.
http://www.lavernenursery.com/Home/products_citrus.html