This section is from the book "Sub-Alpine Plants Or Flowers Of The Swiss Woods And Meadows", by H. Stuart Thompson. Also available from Amazon: Sub-Alpine Plants: Or, Flowers of the Swiss Woods and Meadows.
The family contains 3 genera and only 4 species.
The only species. This well-known prostrate shrub, with wiry branches and linear leaves, pale red flowers and black berries, is locally common in the Alps, and is an example of a plant which, though usually growing on the hills, is sometimes found at sea-level in England (as in Dorset), in the Arctic regions, and at over 8000 feet in the Alps of Europe. May to July.
Europe, Asia, North America, Arctic regions.