Biologia Centrali-Americana :zoology, botany and archaeology - Godman, Frederick Du Cane, 1834 -1919 (Published for the editors by R. H. Porter], 1881)

Botanical Museum leaflets, Harvard University - Harvard University. Botanical Museum. (Botanical Museum, Harvard University, 1971)

Botanical Museum leaflets, Harvard University - Harvard University. Botanical Museum. (Botanical Museum, Harvard University, 1971)

Genera, species et synonyma Candolleana :alphabetico ordine disposita, seu Index generalis et specialis ad A.P. Decandolle, Prodromum systematis naturalis regni vegetabilis - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus librariae Nauckianae, 1858)

Genera, species et synonyma Candolleana :alphabetico ordine disposita, seu Index generalis et specialis ad A.P. Decandolle, Prodromum systematis naturalis regni vegetabilis - Candolle, Augustin Pyramus de, 1778 -1841 (Sumptibus librariae Nauckianae, 1840)

Index Kewensis plantarum phanerogamarum : nomina et synonym omnium generum et specierum a linnaeo usque as annum MDCCLXXXV complectans nomine recepro auctore patria unicuique planta subjectis : sumptibus beati Caroli Roberti Darwin ductu et consilio Josephi D. Hooker Tomus 1-2 = Index Kewensis : an enumeration of the genera and species of flowering plants from the time of Linnaeus to the year 1885 inclusive together with their authors names, the works in which they were first published, their native countries and thei - Hooker, Joseph Dalton, 1817 -1911 (Clarendon Press, 1893)

Videnskabelige meddelelser fra den Naturhistoriske forening i Kjöbenhavn - Naturhistoriske forening i Kjøbenhavn. (Selskabets Bestyrelse, 1854)