From left to right: A. thaliana (Col), A. halleri (ssp. halleri; individual Lan5, Langelsheim, Harz, Germany), A. lyrata (ssp. lyrata; selfing accession Great Lakes, North America), and A. croatica (Baške Oštarje/Ljubičko Brdo, Croatia). A. thaliana was grown from seed to early reproductive stage, and the other species were propagated vegetatively and grown for 3–6 months. The individuals shown here do not reflect the large within-species morphological diversity, particularly in leaf shape, among different accessions of A. halleri and A. lyrata. Image credit: Ute Krämer and Klaus Hagemann.