1. Anonymous. 1805. Acts and votes of Parliament relating to the British Museum with the Statutes and rules thereof, and the succession of trustees and officers. W. Bulmer & Co., London.
2. Boissier, E. 1884. Flora Orientalis, vol. 5. H. Georg, Geneva and Basel.
3. Conti, F., Abbate, G., Alessandrini, A. & Blasi, C. (Eds.). 2005. An annotated checklist of the Italian vascular flora. Palombi Editori, Roma.
4. Dandy, J.E. (Ed.). 1958. The Sloane herbarium: an annotated list of the horti sicci composing it; with biographical accounts of the principal contributors. Trustees of the British Museum, London.
5. Dixon, P.S. 1959. Notes on two important algal herbaria. Br. Phycol. Bull. 7: 35–42.