1. Beiträge zur Zytologie der Gattung Anemone.;Böcher;Bot. Tidsskrift,1932
2. Cytological studies in the genus Ranunculus.;Böcher;Dansk Bot. Arkiv,1938
3. Meiosis in diploid and tetraploid Paeonia species.;Dark;Journ. of Genet.,1936
4. Chromosome behaviour and structural hybridity in the Tradescantiae.;Darlington;Journ. of Genet.,1929
5. The internal mechanics of the chromosomes. II. Prophase pairing at meiosis in Fritillaria.;Darlington;Proc. Roy. Soc. B.,1935a