Least Yellow-sorrel - Oxalis exilis
Favourite Photos
Species Description
Widespread and locally frequent throughout the UK but most common in the south. It is increasing. Habitat includes: pavements, walls, gravel, nurseries, wasteland, rockeries, path-sides, etc. Growing habit: Perennial. Height: Up to 10 cm. Flowers: July to October.
Stace 4:
Oxalis exilis A. Cunn. (O. corniculata var. microphylla Hook. f.) - Least Yellow-sorrel.
Differs from O. corniculata in filiform stems and all parts smaller; leaves always green; seeds 2-4 per cell; and inflorescence always 1-flowered; capsules 3-4.5mm, with 2-4 seeds per cell; usually 5 stamens with and 5 without anthers. Neophyte-naturalised; similar places and distribution to O. corniculata, usually but not everywhere less common; New Zealand and Tasmania.
Key:
- Petals yellow
- No sepals cordate; leaves thin, not succulent
- Aerial stems present; bulbs 0
- Stems procumbent, eventually rooting freely at nodes
- Inflorescence always 1-flowered; capsules 3-4.5mm, with 2-4 seeds per cell; usually 5 stamens with and 5 without anthers
Useful Links:
Online Atlas of the British and Irish Flora