This section is from the book "Handbook Of Hardy Trees, Shrubs, And Herbaceous Plants", by W. Botting Hemsley. Also available from Amazon: Handbook of hardy trees, shrubs, and herbaceous plants.
This is the only genus we have to refer to, and one species alone is hardy even in the South-west of England. There are perhaps nearly 100 species belonging to this genus. The name is that applied to the European species by the Greeks.
1. M, communis. Myrtle. - It is quite unnecessary to describe this charming shrub. Unfortunately it is not hardy enough to bear our winters, except in some parts of the southwestern counties. There are a great many varieties from different localities in the South of Europe, varying in the size and form of the leaves, and double or single flowers.