Scientific NameArabidopsis thaliana
Other Common Names:
Synonyms (former Scientific Names):
winter annual herb
The leaves are mostly basal and are more or less oblong and finely toothed. The few leaves that do occur along the stem are alternate, lack a leaf stalk, and are most often entire (no serration on margins). The leaves are hairy.
This species is a winter annual and grows to be quite small (7-10 inches tall). Most of the leaves are found in a basal rosette at the base of the plant. Both the leaves and stems are covered in hairs. Stems are mostly unbranched and terminate in a raceme. Flowers are small and white with four petals. The fruits are long (1/2 inch long) and thin. This species may look similar to rockcress and whitlow-grass species, but the fruits of mouseear cress are much thinner than either of these other two species.
Flower Seed Head
Raceme with clusters of white flowers.
Fruit is a long, thin silique. Inside each silique there is a single row of tiny seeds.
Common in cultivated fields and waste areas.
upright and nonwoody
Thorns or Spines
Approximate Flower Diameter
Dominant Flower Color
shorter than leaf
Stem Cross Section
round or oval