The British ferns, or, Coloured figures and descriptions with the needful analyses of the fructification and venation of the ferns of Great Britain and Ireland
London :Lovell Reeve,1861.
biodiversitylibrary.org/page/51658959
American journal of botany
Lancaster, Pa. :Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens,1914-
biodiversitylibrary.org/page/47228261
American journal of botany
Lancaster, Pa. :Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens,1914-
biodiversitylibrary.org/page/47228262
American journal of botany
Lancaster, Pa. :Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens,1914-
biodiversitylibrary.org/page/47228263
American journal of botany
Lancaster, Pa. :Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens,1914-
biodiversitylibrary.org/page/47228264