Habit Foliage Flower Seed pods
Mouse-ear cress (Arabidopsis thaliana) foliage is predominantly
comprised of a basal rosette. The rosette is small (2 to 4 inches
in diameter) with very pubescent leaves. Each leaf is slightly serrated,
dark green but often with a purple petiole, and somewhat thick and fleshy.
Up close you can see the coarse texture of the leaves due to the pubescence.
With a 10x or 16x hand lens, you can see that each hair is stellate (star
shaped). But perhaps a more realistic description would be to say they
are the shape of the letter 'Y' (in my opinion). Nonetheless, this
is a fairly unique and identifying characteristic, in that few plants have
this type of pubescence.
Cauline foliage (leaves on stems) are small and linear, with more or less
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