Rumex acetosella | Oxalis | Oxalis pes-caprae | Photonastic movement of ''Oxalis triangularis | Oxalis tetraphylla | Oxalis rubra | Oxalis grandis | ''Oxalis acetosella'' growing at Phoenix Park |
In the New Forest in England, P. longifolia shares its habitat with wild daffodil (Narcissus pseudonarcissus), bluebell (Hyacinthoides non-scripta), wood-sorrel (Oxalis acetosella), bastard balm (Melittis melissophyllum), wood anemone (Anemone nemorosa), columbine (Aquilegia vulgaris).
In addition to common species such as Dog's mercury (Mercurialis perennis), Primrose (Primula vulgaris), Bluebell (Hyacinthoides non-scripta), Wood Anemone (Anemone nemorosa), Wood sorrel (Oxalis acetosella) and Ramsons (Allium ursinum), a number of scarce species are present.