London: J. Van Voorst, 1857.

London, Published for the author by R.H. Porter [etc., 1882]

London: R. H. Porter, 1888-89.

volume in Biologia Centrali-Americana

London: Taylor & Francis, 1902.

London, Taylor and Francis, 1902.

Missouri Botanical Garden, Peter H. Raven Library

London: Bernard Quaritch, 1866-1869.

London: Bernard Quaritch, 1869.

[Cambridge: Printed by C. J. Clay and son], 1882.

[Cambridge, Printed by C.J. Clay and Son]1882.

London: Willughby Society, 1882.

London: [s.n.], 1882

London: [s.n.], 1882

S.l.: s.n., 1858

publication in 4 volumes (1894–1900)

London, K. Paul, Trench, Trübner & co., ltd., 1899.

London[Printed by Taylor and Francis]1884.