Rare species include purple gromwell Lithospermum purpureocaeruleum and butcher's-broom Ruscus aculeatus.
Gromwell (Lithospermum) - A few of these Borage-worts are well worth growing.
Rock Gromwell (Lithospermum Petraeum) - A neat, dwarf shrub, something like a small Lavender bush, with small greyish leaves.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.