The Genus Rumex
1. Common Sheep-sorrel: Rumex acetosella - Introduced species.
2. Curly Dock: Rumex crispus ssp. crispus - Introduced species.
3. Bitter Dock: Rumex obtusifolius - Introduced species.
4. Willow-leaved Dock: Rumex salicifolius var. angustivalvis - Native species.