This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
The purple-leaved variety of this common British plant is largely used for carpet-bedding work and for borders. It has heads of deep-blue flowers and is easily increased by division. The variegated form is also valuable for similar purposes.
Fig. 180. - A donis pyrenaica.