Plum pox show no symptoms on leaves or fruit. Not all infection in "Prunus" are characterized by a ring symptom on leaves. Several cultivars show yellowing line patterns and blotches, or necrotic ring symptoms on expanded leaves. Leaf distortion has also been observed. Infected fruit can develop yellow rings or blotches, or brown rings, and some plum and apricot fruit can be severely deformed and bumpy. The seed of many infected apricots and some plums show rings. Many non-"Prunus" species, in at least nine plant families, have been infected artificially with one or more strains of the plum pox virus, and in
Plum cake 1859-1861) by Isabella Beeton. Mrs Beeton included recipes for "A Common Plum Cake" and "A Nice Plum Cake" as well as "Baked Plum-Pudding", "An Unrivalled Plum-Pudding", "A Plain Christmas Pudding for Children", "Plum-Pudding of Fresh Fruit", "Plum Tart", "Christmas Plum-Pudding", "A Pound Plum Pudding" and "Christmas Cake". The comment in an Indian Household Management book is indicative both of the reach of Mrs Beeton's book as well as the range of interpretations of plum cake and plum pudding. The author says, "Mrs Beeton’s recipe is by far the best if modified a little: 12 units of manukka raisins ..." Up