Annales de la Société scientifique de Bruxelles - Société scientifique de Bruxelles. (1922)

Botanical abstracts - Board of Control of Botanical Abstracts. (Williams & Wilkins Co, 1921)

Bulletin of miscellaneous information - Royal Botanic Gardens, Kew. (H.M. Stationery Office, 1919)

Bulletin of miscellaneous information - Royal Botanic Gardens, Kew. (H.M. Stationery Office, 1919)

Journal of botany, British and foreign - Rendle, A. B. (Alfred Barton), 1865 -1938 (Robert Hardwicke, 1863)

Just's Botanischer Jahresbericht - Just, Johann Leopold, 1841 -1891 (Gebruder Borntraeger, 1919)