[From The Old Rose Adventurer, by Brent C. Dickerson, p. 133: Dickerson supplies this information from William Prince, 'Princesse Adélaïde' was] the first variety produced of what will hereafter constitute a new class... Mossy Bourbon Roses... [''Princesse Adélaïde''] is of the dame vigorous habit as the Bourbon family; the flowers are produced in immense clusters, and are large, full double, and of magnificent appearance... The second and only additional ["mossy Bourbon"] hybrid yet obtained is 'La Delphinie'...