Scientific name: Arabidopsis thaliana (L.) Heynh.
Common name: Thale Cress
Description
Habit: An erect annual, to 25 cm high.
Stems: Slender, simple or branching.
Leaves: Mostly basal, stalkless, undivided, oblong, coarsely toothed; stem leaves few and alternate.
Flowers: White, actinomorphic, hermaphrodite, 2-3 mm across, in racemes; sepals 4, free; petals 4, free; stamens 6 and ovary superior.
Fruits: A silique, 1-2 cm long, spreading, on short, thick pedicels.
Habitat: Limestone walls and rocks.
Distribution: Rather rare.
Native status: Native
Of conservation interest: No