Thale Cress - Arabidopsis thaliana
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Species Description
Stace 4:
Arabidopsis thaliana (L.) Heynh - Thale Cress.
Annual; stems erect, to 30(50)cm, simple or branched, with few leaves; basal leaves entire to dentate; petals white; fruits 0.5-2cm; 2n=10. Native; cultivated ground and bare places on banks, walls, rocks and waysides; throughout British Isles, rarer in North & West. Stamens usually 4.
Key:
- Plant without sterile leaf-rosettes, with only roots underground; mostly lowland
- Petals <5mm, usually white; lower leaves entire to shallowly toothed