Abhandlungen der Königlichen Böhmischen Gesellschaft der Wissenschaften von den Jahren ... - Královská ceská spolecnost nauk. Trída mathematiko-prírodovedecká. (G. Haase, 1843)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1988)

The London journal of botany : containing figures and descriptions of such plants as recommend themselves by their novelty, rarity, history, or uses : together with botanical notices and information and and occasional portraits and memoirs of eminent botanists - Hooker, William Jackson, Sir, 1785 -1865 (H. Baillière, 1848)